PM2.5, a term that we were not too familiar with a few years ago, is now known by everyone. It seems that PM2.5 has become popular overnight. As for air quality, everyone has a steelyard in mind. The author lived in the countryside when he was young. As a post-80s rural child, he had more memories of helping his family work. When he was young, he got up before five o'clock to fill a car with cabbages, and set out for the vegetable market before dawn. The whole journey of selling vegetables was accompanied by the rise of the sun. On the way, he could clearly see the mountains in the distance. The blue sky and fresh air seem to have become childhood memories. As a small city developed by relying on coal mines, the pollution of this third tier city is very serious, and the coal power plants in surrounding counties and cities make the air form increasingly severe. Masks have gradually become the daily necessities like gloves, and people who wear masks to and from work can be seen every day. However, most masks still stay at the level of dust prevention, and the filtering effect of PM2.5 is very general. Under the sky, we need fresh air urgently.

DNC electric intelligent protective mask is a mask product with efficient filter screen. The packaging of the mask is designed with a white background, supplemented by the pictures of the product. It should be said that the packaging of the mask is very excellent.

The back of the mask is the basic function description of the product, and the circular graphic design is used to explain the function. At the same time, in order to facilitate the user's carrying, the mask provides a paper handbag.

In terms of internal packaging, two grooves are adopted, with one groove for the main machine and one groove for the accessories.

DNC respirator provides a set of products, power cord for power supply, two sets of ear muffs and a set of standby filter screen.

The product host uses customized plastic packaging, which is very sanitary for mask products.

The host of DNC mask is designed in white color. The front of the product is the air inlet. The logo of the product is printed in the middle of the bottom, and the LED status indicator is at the bottom. The back of the product is a soft rubber cover, which is made of food grade silicone material.

The DNC mask provides a detailed instruction manual, which is very convenient for new users to learn and use.

The most widely used MicroUSB interface is used for charging the mask.

The left side of the product is the power switch, which can easily switch the wind speed and switch the mask. The button is slightly stiff.

On the right side of the product is the DNC charging port. The charging port is equipped with a rubber sealing dust-proof pad. The charging port has a very good dust-proof effect.

The soft rubber cover of DNC mask is made of food grade silicone material, and the soft rubber cover is designed in a snap fit way, which can be easily installed and removed. The soft rubber cover is ergonomically designed to closely fit the breathing part of the face.

The filter screen of DNC is located below the mask and is installed by snap fit.

The installation of the filter screen also adopts the snap on design, which is very convenient to take down and also very convenient to install. The filter screen is a consumable for the DNC mask. According to the official data, when PM2.5 is 200, it can be used for about a week, and then the filter screen needs to be replaced.

The filter screen is made of PP material, with a design of four layers of filter screen, sterilized paper, activated carbon, HEPA screen and non-woven fabric, which can effectively filter pollen, catkins and other particles that are not easily allergic to humans. At the same time, it can also filter 0.3 micron fine dust particles in the air. The front of the filter screen is made of green material, while the air outlet is designed in white. After a period of use, the color change here can be seen clearly. When the color of the filter screen changes too deeply, the filter screen needs to be replaced.

Below the filter screen is one of the important parts of the mask - the wind wheel. The wind wheel is made of FBC material. It is optionally installed through a brushless DC motor to inhale external air. The front end is filtered through the filter screen.

When the machine is turned on and working normally, there is a green LED light under the DNC mask. In order to intuitively experience the air suction effect, the author used a cigarette to experience, and the suction effect of the fan was very good.

The ear hook adopts the adhesive design, which is very convenient for installation and removal.

If you don't like it or it is inconvenient to hang it on the ear, a plastic pendant for hanging it on the back of the head is also provided. The ear hook can be connected to the accessory for very convenient use.

In order to facilitate the user's use and maintain the sanitary condition of the mask, DNC mask provides a storage bag for the user to carry conveniently.

When charging the DNC mask, the red light is on and the green light is on when the mask is fully charged. The charging time is about two hours. Of course, the author charged the mask before all the batteries were discharged. After wearing a mask and turning on the fan, the user found that the green LED at the bottom would flash intermittently, which was a bit too fashionable for road use. For the author, he still hopes to provide a switch to turn off the LED. The author normally uses the DNC mask for three days. The wind speed throughout the whole process is 1 gear. The daily use time is about 30 minutes when riding an electric bike. The author opens the filter screen of the mask and finds that the filter screen is still very clean. Compared with the new filter screen, there is no obvious change. After checking the PM2.5 website, the environment in recent days is very good. The PM2.5 values are below 100, so it is understandable that the filter screen is relatively clean.

Summary

Through the air purification power system, the DNC electric intelligent protective mask adopts an efficient four layer filter screen, which can effectively filter fine particles (PM2.5) Dust, bacteria, pollen, smoke and other harmful substances can effectively reduce the content of toxic gases such as TVOC. One charge can last more than 4 hours. It has a wind wheel motor that can work continuously for 30000 hours. It uses skin friendly medical materials and ergonomic design. It is light in weight and comfortable to wear. It is very suitable for use in areas with PM2.5 explosive meters.