1、 Write in front

Jiangning, a suburb once looked down upon by residents in the main urban area of Nanjing, has now become the economic region with the largest GDP in the city. In December 2017, it was also elected as one of China's top 100 industrial counties. Why did I put up a map? With the construction of Jiangning University Town, 15 colleges and universities have settled down, including Southeast University, Nanjing University of Aeronautics and Astronautics, Hohai University and China Pharmaceutical University. The educational resources gathering place will also be the real estate gathering place. Jiangning's real estate development is also among the best in the city. Even in the cold winter of the real estate market under the multi-level high-pressure control, the real estate sales are still not low. As can be seen from the above figure, there are various new buildings near and around Dongshan urban area. With a large number of development projects, air pollution in the city is inevitable. I often wash my car after work. The next morning, it was gray again.

The child has been running to the hospital every day since she was four and a half months old, because she will be in the second hospital almost every other month. The doctors and nurses in the pediatric inpatient department know this little guy. What impressed me most was that I also experienced a little girl from intern nurse to head nurse to marriage and birth. Every time I come to the hospital, I feel like going home. The toll office, the boiling water room, the bathroom, the canteen, the canteen are clear. The microwave oven in the boiling water room is easy to use, and the elevator in the stairway is clear.

My child inherited my allergic rhinitis, so a heavy haze will lead to upper respiratory tract infection. Many osmanthus trees are planted in the community. When osmanthus blooms in the August of the lunar calendar, my daughter and I have all kinds of stuffy and runny noses. Wearing masks and closing the windows and doors when going out failed to prevent children from coughing. It cost more than 2000 yuan each time to register, check and hang water in the outpatient department. Tragically, children in Jiangning cannot enjoy urban medical insurance, so they can only use rural combined treatment, which was capped at 800 yuan. In addition, the reimbursement rate for outpatient department is extremely low. I remember that it cost more than 2300 yuan once, and finally directly reported 120 yuan. For this reason, I also bought serious illness and medical commercial insurance for my child, so I was hospitalized when I could. There are a lot of invoices at home, and dozens of cases have been written, CT、 I don't know how many times the allergen test has been done. After testing, the child has 8 kinds of allergens, the first one is dust allergy, so the family bought a vacuum cleaner and acarid remover, but the child is still often sick. Children, every time they get sick, they bring back a lot of medicine, and a suitcase is full of the leftovers. They will dispose of the expired medicine every once in a while, or they won't be able to fill it. Because of illness, I often ask for leave. The kindergarten takes sick leave at home longer than the class time. Fortunately, it is still a kindergarten. If I go to primary school, I will be in trouble and have a headache. Having seen the anti allergy treatment plan introduced by the hospital, the doctor introduced the side effects of these treatments, which frightened me so much that I never dared my child to try.

Because we often have bronchial asthma, we have to go to the hospital to do atomization every time, so we simply bought a hospital like atomizer at home, which cost more than 2000 yuan. There are also hundreds of pieces on the Internet. I was afraid that the atomization effect would not be good, so I joined this set mercilessly. The child is also very sensible. Every time he does atomization, he is very active, including taking blood tests in the hospital. He is also very brave and never cries. In fact, as parents, they still see in the eyes and feel pain in the heart.

The child grew up slowly, and his physique improved, but whether he would interrupt and get sick or not. Now it is more inclined to traditional Chinese medicine treatment. When bronchitis occurs, go to the hospital to give her a moxibustion. Often, the family would do it by themselves, so they bought a set of moxibustion equipment. However, the smoke at home was too heavy, so the idea of buying an air purifier came into being.

Just saw Love to play computer games We registered for the public test of breathing air purifier at the first time and were honored to be selected by the platform. Moreover, the air purifier for breathing freely is the product of Hammer Technology's Laoluo family. Although the hammer product has not been used, Laoluo will watch every product launch, and personally appreciate his personal speech style. I don't know how many people like me will not fast forward for several hours. Now that I am first exposed to Hammer Technology, let me calm down and slowly experience this product. I hope you can also follow my footsteps to evaluate it. If you have ideas and opinions, please leave a message at the bottom of the article, so that we digital enthusiasts can grow together with Hammer Technology.

2、 Packaging accessories

The outer package of the breathing air purifier is a primary color paper pulp box, which is the same as the general household appliance packaging. However, the difference is that the box adopts a split design, and the purifier can be moved out directly by removing the four packing belts and lifting the upper cover. Compared with the one-piece design, it takes a lot of effort to bring it up, and it needs two people to help. This split design is more humanistic.

After opening the package, there is a layer of environmental protection bag outside the purifier, and the end has a rubber band closure design. Don't lose it. It can also be used as a dust cover in the future.

There is also a simple installation manual with pictures and text on the top of the purifier, and the names of each button and indicator light of the purifier are also marked on the upper and lower edges of the manual. Therefore, after reading this piece of paper, the purifier can be used normally.

There is also a long box at the bottom of the package, which contains the power cord of the purifier. Like the purifier, the power cord is white, the plug has a dust cover, and the wire is also bound with white rubber tape. The length is 1.8 meters, which is usually enough for household use. It is recommended that the manufacturer add a 3 meter line so that the purifier can be arranged in more places.

Product manual, color printing, containing product introduction, installation guide, use guide, maintenance guide, basic parameters, fault and guide, statement of hazardous substances, precautions, warranty and other information. Let's take a look at the basic parameters. The model is KJ800G-JT01, the rated power is 98W, the rated voltage is AC220V, the frequency is 50Hz, the maximum noise is 68dBA, the clean air volume is 800m3/h (particulate matter), 300m3/h (formaldehyde), the cumulative purification volume is P4 (particulate matter), F4 (formaldehyde), and the purification efficiency is high (particulate matter), high efficiency (formaldehyde). The weight and net weight are 17KG, and the size is 384mmx384mmx817mm (including casters). The weight and size are also difficult for the author to move from the garage to the fifth floor by climbing stairs. It is recommended that you move together.

3、 Appearance details

The smooth breathing air purifier is designed in pure white. The advantage of white body is that it can match with simple, retro, Mediterranean and other styles. In addition, white itself gives people a clean and refreshing feeling. The purifier is a cube as a whole, with arc design on four sides, which looks more rounded. Now let's take a look at the details of the smooth breathing air purifier.

The front of the purifier looks more three-dimensional because of its arc design. There is a round display screen on the top of the front. The display screen is attached with a protective film when it leaves the factory, and the product logo in the shape of "five trees" is below. The forest is the nature's oxygen bar, and breathing freely is the user's oxygen bar.

Regular air inlets are arranged on both sides of the purifier to maximize air intake. There is a clasp on the top of the side, which is used when moving at home. In fact, if there are casters at the bottom of the smooth breathing, they can't be used at ordinary times, just push them directly.

There is also an air inlet design on the back of the purifier, so there are three air inlets, which also guarantees the smooth breathing of 800+m3/h. There is a rear cover clasp at the top of the rear, which is used when opening the rear cover to update the filter element. Then down is the PM2.5 sensor vent, and inside is the monitoring sensor.

At the bottom of the rear is the power interface, which is marked with words and pictures. After reading it, it will not be inserted reversely. The plug is properly tightened and loosened, so it will not be difficult to insert or fall off.

The top of the purifier is an air outlet with a regular grid design. If something is accidentally entered, you can open the back cover and take it out of the formaldehyde filter cartridge. The top edge of the purifier adopts a rounded arc design, and the surface is fine sanded. It feels comfortable and does not cut your hands.

There is a row of indicator lights and a button on the top of the front of the purifier, on which the functions are marked in Chinese characters. From left to right are extremely strong, sleep, automatic and manual. In the middle are four mode switching keys, and then to the right are child lock and filter element. At present, the child lock mode can only be enabled in the mobile phone APP to prevent children from accidentally touching. When the filter element needs to be replaced, the indicator light will also prompt.

There are WiFi keys and power keys on the upper back of the purifier. The former is convex keys, and the latter is concave keys. There is a green indicator in the middle of the WiFi button, which is always on during normal use, and flashes when connecting to WiFi. There is a light sensor above the power key, which automatically adjusts the brightness of the screen, so that the screen will not be too bright and dazzling at night.

The bottom of the purifier is gray grid shading, and the casters are of hidden design. The casters can not be seen at the front, so the appearance is more beautiful. After many tests by myself, the hidden caster can still pass through the convex corner lines of the door seams and the low sliding door rails of each room without jamming. If a high track sliding door is adopted, it can be passed by simply lifting both hands and knocking up the front of the clasp on both sides. The casters are made of rubber, so they move quietly, but they are easy to absorb dust and need to be wiped frequently.

The rear cover of the purifier is designed with magnetic adsorption. The rear cover can be opened by pulling the fingers outward. There are two clips on the left and right under the rear cover, which are more stable after closing. There are several magnets on both sides of the rear cover, and the adsorption force is very large. There is a snap when you close it. There is also a filter element replacement tutorial inside the rear cover, which can be operated smoothly without looking at the manual.

Open the back cover and you can see the internal structure. The internal structure and the mesh cover are also white.

The top is the formaldehyde removal filter cartridge, and the cover can be opened by pressing the buckle with both hands at the same time. The model I tried is a standard version, and there is no standard formaldehyde removal filter element. The formaldehyde removal activated carbon filter element needs to be purchased by yourself, and the price is 699 yuan. For some families who have just renovated or bought a new home, it is necessary to buy a formaldehyde removal activated carbon filter element. Now a bottle of formaldehyde removal spray costs one or two hundred. The internal structure of the purifier can be seen through the formaldehyde removal filter cartridge, which presents a trapezoid. The air of the purifier is blown from all around. DC brushless motor is used for smooth breathing, with damping rubber on the top, backward centrifugal wind wheel on the bottom, and EPP material on the outside of the wind wheel. Below the formaldehyde removal filter cartridge is the PM2.5 sensor. If it is dirty, you can use a cotton swab to wipe it with water.

The high-efficiency haze and formaldehyde removal composite filter element is protected by a white filter screen outside, which blocks large particles of dust and extends the service life of the filter element. Take it out for cleaning after a period of time, and then dry it in the air. Both sides of the protective net have buckle design, which is convenient to take out.

Haze and formaldehyde removal composite filter element, 3M, Toray filter element raw materials, H13 filtration performance, 4000+mg formaldehyde CCM, maximum developed area of 6.56 square meters, 50000+mg particulate matter CCM. The filter element adopts a columnar carbon filter screen, which is less likely to produce odor after a long time of use than some carbon cloth filter screens. There is also a ring of rubber pad on the upper edge of the filter element, which has the function of shock absorption and noise reduction. There are two portable belts on the edge of the filter element, which can be easily pulled out when replacing the filter element. High efficiency haze and formaldehyde removal composite filter element, the first layer: 60 mesh PET filter screen, ultra-fine dust filter screen, which can remove particles, hair, pet dander and dust with a diameter of more than 60 mesh (0.3mm); The second layer: H13 HEPA filter screen, which can filter PM2.5, pollen, allergens, second-hand smoke, etc., and achieve a single filtration efficiency of 99.97% for particles with a diameter of more than 0.3 microns; The third layer: modified activated carbon filter screen, which can remove harmful gases such as formaldehyde, toluene, volatile organic compounds and various odors.

This is the haze and formaldehyde removal composite filter cartridge. The rail design prevents the filter cartridge from shaking inside. There is a switch at the bottom, which slides to the left to unlock the filter element and slides to the right for normal use. The manufacturer has also marked a prompt on the left and right of the switch to prevent users from making mistakes.

4、 Installation and use

The haze and formaldehyde removal composite filter element is easy to install. After removing the plastic protective film, push it inward. Then align the lower part of the protective cover with the rail and push it to the bottom. Finally, align the snap at the bottom of the rear cover with the groove at the bottom of the purifier and close it upwards. There is no difficulty in the whole process, and each step is labeled with a driving installation label.

White purifier and home decoration are easy to blend together, and white is indeed a versatile color. The casters are of hidden design, and the front is invisible, which is beautiful.

The height of ChangBreath air purifier is 81.7cm. The daughter is 7 years old and 110cm tall. She can also touch each button normally. A child as old as her is still a little sensible, and won't press the buttons randomly. If some children under the age of 3 are hard to talk about, they will be full of curiosity and press any key. At this time, the child lock function needs to be turned on.

The screen of the air purifier is round, with numbers in the middle and lights around. When PM2.5<75, the display is green, and the air quality is excellent; When pm2.5 is between 75-150, it displays orange, and the air quality is slightly polluted and moderately polluted; When pm2.5>150, it is red, and the air quality is seriously polluted. What I want to say here is that the font size is OK, that is, when the font is thin and the light is bright, the color appears a little light.

The indicator lights on the upper edge of the purifier are green, and they are always on when turned on. The WiFi indicator is always on when it works normally, and will flash at intervals when it is set.

The power consumption of the smooth breathing air purifier is 0.98W when the machine is not turned on. Although the wattage is very low, if it is not used for a long time, it is recommended to unplug the socket to avoid wasting power resources.

5、 Comprehensive test

1. Three mode test

[Automatic Mode] Generally, the user will set it to automatic mode. The author tested the noise and power consumption. Because of the automatic mode, the data changes greatly. According to the author's observation, the power consumption generally hovers around 20W, the noise at 0 distance is about 58.2dBA, and the noise at 60CM distance is about 40.5dBA.

[Sleep mode] In the sleep mode, the power consumption is relatively stable, the value is 7.62W, the noise at 0 distance is about 40.5dBA, and the noise at 60CM distance is about 34.6dBA. The noise at a distance of 60cm is almost the same as the ambient noise, which is very quiet.

[Extreme speed mode] In extreme speed mode, the power consumption hovers around 110W, and the noise from 0 is about 76.1dBA. Of course, this is the result of the measurement when there are other noises in the environment. After all, there is no completely quiet test environment available, so there is some difference from the 68dBA marked by the manufacturer. The noise at a distance of 60cm is about 58.4dBA. This sound is much louder than the silent mode. If you sleep, you can't turn it on. If you watch TV in the living room, you need to increase the volume of the TV.

The indoor quiet state is about 30dB, the indoor speaking is about 60dB, the noise of hair dryer and vacuum cleaner is about 70dB, and the car whistle is about 80dB. The zero distance noise value of the breathing purifier is similar to that of the vacuum cleaner, but it is much lower after the distance is 60cm, which is within the range of normal indoor speaking noise.

Then compare the data of the three preset modes through the icons. The power consumption is 7.62W at least in the sleep mode and 110.07W at most in the extreme speed mode; 0 distance noise, minimum 40.5 dBA in sleep mode, maximum 76.1 dBA in extreme speed mode; Noise at a distance of 60cm, minimum 34.6dBA in sleep mode and maximum 58.4dBA in extreme speed mode. In terms of power consumption, the maximum power consumption is about 110W, which is lower than that of LCD TV and a fraction of that of air conditioner. In terms of noise, the noise from 0 is not low, but in real life, few people attach their heads to the purifier, at least about one meter away. Below, you can refer to the test data of one meter away.

2. Manual mode test

The air outlet of the smooth breathing air purifier is in a ring shape. The air outlet is around and there is no air in the middle.

This is the wind speed and noise test values from the first gear to the sixth gear in the manual mode. The wind speed is 1.4, 1.9, 2.6, 3.4, 4.5, 4.8 (M/S) respectively, and the noise from the zero distance is 42.7, 50.4, 58.5, 68.5, 75.2, 77.4 (dBA) respectively.

Simulate that the distance between ordinary family members and the purifier is 1m, which is equivalent to that the purifier is placed in the middle of a 2m long bed.

The measured noise values are 34.9, 35.9, 41.3, 50.3, 57.8 and 59.3 (dBA) respectively, with the maximum not exceeding 60 dBA.

In terms of power consumption, the first gear to the sixth gear are 8.73, 12.42, 21.80, 45.44, 90.26 and 108.31 (W) respectively.

Then analyze each test value through the chart. The biggest change in the figure above is the power consumption. 8.73W is increased to 108.31W, increasing the power consumption by 10 times. If it is not a special need, it is unnecessary to open the fifth and sixth gear; The wind speed is increased from 1.4M/s in the first gear to 4.8M/s, which is about 2.5 times higher; The noise is acceptable when the first to third gears are within 60dB at 0 distance, and a little noisy when the fourth to sixth gears are within 60dB at 1 meter. The noise intensity is acceptable when the first to sixth gears are within 60dB. Under normal circumstances, the user will not stick the purifier, but will be separated by 1-2 meters. At that time, even the sixth gear will not be difficult for you to accept. Under normal circumstances, everyone will turn on the automatic mode. Through the previous numerical analysis and manual mode numerical analysis, the automatic mode is roughly equivalent to the third gear, with 20W power consumption and 40dB noise. When sleeping at night, it is adjusted to sleep mode, which is roughly equivalent to the first level. With 8W power consumption and 34dB noise, it is still very quiet, and only a small sound can be heard at night.

6、 Mobile APP

Scan the QR code on the manual to install the Breathing APP. The icons are also five trees. After opening the APP, you can log in after setting. The specific login method will be explained in detail below. The APP is divided into four sections: equipment, help, shopping mall, and personal. The equipment is the main interface for operating the purifier. The help is similar to a manual. Look at the product introduction, installation and use introduction. The shopping mall can purchase other products of the hammer. Individuals can log in to the APP and share the purifier and other operations.

There is a lot of trouble in connecting the purifier device on the mobile phone. My mobile phone is iPhone SE, which has been connected many times, and each time it is stuck in the connection. So after I changed my family's LeEco mobile phone, I was also in this state, but when I gave up, I suddenly connected myself. The purifier has also been successfully connected to the Internet. It's amazing that my iPhone SE has also been successfully connected. In the future, both mobile phones can be logged in at any time to operate the purifier. To add a device, open the APP, click the "+" in the upper right corner, and the phone will be in the connected home WiFi state. At this time, the purifier will be powered on. Long press the WiFi button at the rear of the purifier. When the light flashes, click Next and enter the home WiFi password to connect to the network.

The lower part of the main interface of the device is similar to the layout of the buttons in the front row of the purifier. The power supply, extreme speed mode, sleep mode, automatic mode and manual mode will pop up after clicking the manual mode. The middle is the current air quality parameters of the home, PM2.5=12，PM10=12， The indoor temperature is 13 ℃ and the indoor relative humidity is 51%, both of which are in good condition. The upper right corner is the local PM2.5 value. Click Open to see that the current air quality is good, PM2.5 is only 29, and AQI PM10、 The values of sulfur dioxide, nitrogen dioxide, ozone and carbon monoxide, as well as the forecast for the next five days. Click the setting pinion on the top to change the name of the purifier, open and close the front screen of the purifier, which is very useful when sleeping at night. At the same time, you can also open the child lock, view the purifier manual and update the firmware here.

In addition, it is worth mentioning that the smooth breathing air purifier supports Internet control. The author can still open and close the purifier, set purification mode, set child locks, update firmware and other operations after disconnecting the WiFi of the mobile phone and using the 4G network connection. In this way, users can turn on the purifier in advance each time before going home, and then they can breathe pure air when they get home. This function is very practical. Some people said whether there would be security risks. In fact, you registered with your mobile phone number at that time. In addition, you had to press the WiFi entity button at the end of the purifier at the same time when setting up. Others could not operate it.

7、 Purification performance test

Having seen so many tests on appearance, noise, power and wind speed, it is necessary to test the actual air purification effect of smooth breathing. The author's family has 97 square meters of small three bedrooms, and the largest space is the living room, about 30 square meters, which is usually only a dozen square meters. If you breathe 800 CADR, it is enough for that room. Because the children at home are allergic and cannot be tested in the living room and bedroom, I went to the study to test. The study is 3.3 meters long, 2.7 meters wide, 8.91 square meters in area, 2.5 meters high, and about 22.3 cubic meters in volume.

Because children often get sick, in order to avoid taking too much medicine, they often use traditional Chinese medicine moxibustion treatment. After a long illness, he would make moxibustion for his children, so he simply bought a set of moxibustion equipment online. In order to avoid the smoke around the whole family, we usually do it on the balcony. In order to test the smoke during moxibustion, I chose to test it in the small space of the study. Of course, in order to prevent the smoke from spreading to other rooms, I blocked the door with wet towels.

Generally, 4 sticks of moxa sticks will be lit during moxibustion. If the lid is not closed, the smoke will be very heavy. Don't underestimate the four light smoke. Within a few minutes, the moon and birds will be dim in the study.

Of course, my participation in the test will also be smoked down by the smoke. After all, the author is also allergic rhinitis, and a lot of smoke will also lead to mucus and tears. Just now, the company was engaged in a fire performance some time ago, and each person was given a smoke mask. Everyone noticed how I was wearing it, and I was wearing it wrong. The part with iron bar is at the nose position, and the two belts should be put down from the top of the head at the same time to completely seal the nose and chin. I think many people will wear a tape on each ear, which is wrong. First, it is very loose, and second, it cannot seal the nose and chin.

Because the room is small, it will be filled with smoke in a few minutes, and PM2.5 will explode the meter. It will be directly red 999, the maximum value that the meter can display. If you are viewing the mobile phone APP, PM2.5 is only displayed with "-", while PM10 can be displayed digitally.

The author uses a GIF dynamic chart to demonstrate the changes of various parameters in the process of air purification of the smooth breathing air purifier. When PM2.5 exceeds 999, APP does not judge the air quality, but it can be seen that PM10 has reached 10525. When PM2.5 drops below 1000, it starts to display PM2.5 value, then it is judged as red serious pollution, then it slowly drops to orange, and finally to green.

This is the value change and time of the air purifier from the burst meter to within 10 under the automatic mode.

This is the value change and time of the air purifier from the burst meter to within 10 in the extreme speed mode.

Because the change speed is too fast, I can't capture the screenshots in time, so it's hard to capture the same value. Therefore, it is difficult to count how much time has been spent from exploding watches to red, orange and green. We simply looked at the burst meter and found that the total time of 9:00 was 13 minutes for automatic mode and 8 minutes for extreme speed mode, 5 minutes less and 62% faster. Some people will say, why not also test the purification time of sleep mode? I want to say that it is unnecessary. The room is full of smoke, and it is very urgent to use the super low speed sleep mode. What's more, we can do moxibustion treatment in it. It's too slow. If moxibustion is not cured, people will faint.

Some people said that they didn't feel it just by looking at the values. Let's take a look at the actual indoor pictures. This is the picture when PM2.5 burst the watch. The whole room is foggy, and the nose and tears are smoky without masks.

This is the picture when PM2.5 drops to single digits after purification. It is clear and refreshing, and there is no smoke at all. Of course, if PM2.5 will be zero, we also suggest that you open it for a longer time, because there is still a smell of moxa sticks in the house, and the filter element can also remove the odor. Of course, like my home, when cleaning while moxibustion, it is more important to turn it on to the end. I chose the automatic mode, so that the noise is less. When I do it, I can watch TV without being afraid of noise.

8、 Mass testing summary

Smooth breathing air purifier is the first purifier launched by Hammer Technology in the health field, with a price of 3499 yuan. White body, versatile home decoration, 817mm height, rated power 98W, maximum noise 68dBA, clean air volume 800m3/h (particulate matter), 300m3/h (formaldehyde), net weight 17KG. The default three purification modes are extreme speed, sleep and automatic, and the six gear adjustment of manual mode can also be used. The smooth breathing air purifier is also equipped with a child lock to prevent children from misoperation. At the same time, there is also a corresponding mobile phone APP pairing, which can also be used to control the purifier when lying in bed. In addition, it also supports remote Internet operation. After work, the purifier can be turned on remotely, and you can breathe pure air at home. 800CADR, just like in the advertisement, it will be clean after a swish. In the 9-square meter study, when PM2.5 explodes the meter, the value will be below 10 in 8 minutes in extreme speed mode, and it only takes 12 minutes in automatic mode. ChangBreath is equipped with a high efficiency haze and formaldehyde removal composite filter element as standard, and the filter element replacement is also very simple. If you have newly installed a house or purchased a new home, you can also purchase a formaldehyde removal super activated carbon filter element to remove harmful gases such as formaldehyde, toluene, volatile organic compounds and various odors.

The author has an allergic girl at home, and needs to often do traditional Chinese medicine moxibustion. Every time, the family is surrounded by clouds because of this, which is not conducive to the child's illness. And this air purifier can just make up for this deficiency, so that children can be relieved to do moxibustion at home. In the August osmanthus fragrance season, you can open the window and breathe the fresh air of nature after opening the purifier. The medicine is highly toxic. I really don't want this little girl to have bronchial asthma again. I want to do CT and hang some drops, hoping that she can grow healthily. The girl will go to primary school next year. If she still gets sick frequently, asking for leave will delay her study. It's a bit far fetched. Finally, let's briefly summarize the product features of Breathing Free and my personal suggestions.

[Product Features]

-Split packaging, easy to disassemble.

-White body, hidden casters, and versatile home decoration.

-800CADR, high air purification efficiency.

-50000+mg particulate matter CCM, 4 times the highest level of the national standard.

-Multiple modes are available. Sleep mode has extremely low power consumption and noise.

-It is equipped with mobile phone APP, which can be controlled remotely.

[Personal suggestion]

-It is recommended to add a 3m power cord, which can lay out more places in the family.

-The first connection of the purifier is a bit slow when setting up the network. I hope the manufacturer can optimize it.

-The font on the display screen is thin and not conspicuous when the light is strong. It is recommended to make the font bold.

9、 Video evaluation

At last, the author gave you a simple demonstration video. The front is a brief introduction to the smooth breathing air purifier, and the back is a test.

1. Comparing the noise of the purifier's extremely strong mode with that of the sleep mode, there is still a big difference between them. The sleep mode is very quiet.

2. Compared with the household range hoods, hair dryers and hair clippers, the noise of hair dryers and hair clippers has exceeded 90dB, and the distance between them is only 76dB compared with the smooth breathing distance of 0. The distance extension will be smaller, and these noises are not as harsh as those of hair dryers and hair clippers.

3. Finally, the air volume of the extremely strong mode and the sleep mode was tested. The air volume of the sleep mode was about 1.3 M/S, and the extremely strong mode was about 4 M/S. The change of the air volume of the two modes could also be seen intuitively through the pink ribbon.