The family has a small pattern of duplex two-story, but I am not a rich second generation, and my life is towards a well-off society. Upstairs are mainly utility rooms and balconies. In the morning and evening, most of the time, family members will go to the balcony for morning transportation, or plant flowers, feed fish, or drink tea to chat, feeling at ease, as if isolated from the world. On the one hand, the sound insulation effect between floors is too good. The balcony is empty around, and you can hardly hear the sound from downstairs in the balcony. What bothers me for a long time is that I often knock at the door downstairs, but my parents don't know it at home. This problem was not completely solved until a doorbell was received recently. Thank you Love to play computer games Linbell G4 doorbell trial products are provided.

Many families will choose to install doorbells on their doorsteps. Most prefer traditional old-fashioned doorbells, which are not so beautiful with an extended wire. The popularity of wireless technology has led to the emergence of wireless doorbells. Due to the limited technology development capability, most early wireless doorbells need separate power supply. Today, the Linbell G4 wireless doorbell to be evaluated is more powerful and can generate power by itself. The magic lies in it. Let's study it together.

The outer packaging of the Linbell G4 wireless doorbell is a kraft paper box push-pull packaging. The front is the front sketch of the doorbell product, and the upper left corner is marked with the logo of the manufacturer Linptech LinkedIn Technology. The back is printed with the product model, specification, parameter information and manufacturer information, as well as the QR code of LinkedIn WeChat official account. The bottom position is marked with the product features: no battery, wireless remote control, free code matching, power off memory, front and rear door differentiation, adjustable volume, and ultra-low power consumption. It's really 666 that a doorbell can play so many tricks!

The top is simply marked with the Linbell self generating wireless doorbell, which has no battery and is environmentally friendly. The bottom advocates environmental protection and ingeniously uses the small packaging box as a desktop storage box, which is also a good choice.

The main body of Linbell G4 is a transmitter and a signal receiver. In addition, it is also equipped with a pair of fixing screws, a 3M double-sided adhesive backing and a user guide manual. The manual contains detailed operating procedures and a warranty card on the back. The inner package uses cardboard to fix the product to avoid collision and friction.

The main body of the received Linbell G4 self generating wireless doorbell is white, the shell is made of polycarbonate, and the surface is slightly frosted. The transmitter has a simple stroke of bell in the middle, and the word "Linbell" below. There is a slight groove in the middle of the bottom, which is smooth and bright, and fits the radian of the finger surface.

The back is equipped with a mounting panel, and the panel is equipped with holes, which can be fixed with the attached screws. If it is made of iron doors and other materials, the complimentary 3M can be used. The overall size of the transmitter is 83m * 46mm * 20mm, weighs 45g, the frequency is 433.92MHZ, the transmission power is 10dBm, according to the pressure degree less than 5N, the maximum distance outdoors is about 80m, and the indoor distance is about 30m when the signal passes through the wall.

The back of the mounting panel is equipped with a snap fastener. Insert a screwdriver and pull it out with force to separate the panel from the back. After disassembly, it can be seen visually that a small motherboard is fixed at the back, and a ring of red signal antenna is around the four sides. No battery design makes the transmitter more exquisite.

The built-in PCB board is compact and dense, with 14 pin chips, and the surface packaging is not marked. The other side is embedded with a high-performance low-power wireless RF chip CC115L. The pressing part is the overall core of the transmitter - the self generating pressing generator, which drives the magnet to move by pressing, and electricity is generated from the magnet, using the Faraday electromagnetic induction law in our high school physics textbook. Different from the traditional rotary cutting magnetic induction line power generation, the planar motion power generation device has higher efficiency per unit stroke.

The upper part of the front middle of the receiver is also equipped with bell strokes and Linbell characters, the lower part is the volume key and music key, the side is trapezoidal structure, the back is slightly smaller than the front, the back plug is a national standard two plug, and the lower part is the horn hole.

The overall size of the receiver is 83mm * 48mm * 23.5mm, and the width of the socket on the row occupies just one hole. The overall weight is 59g, the standby power consumption of the host is 0.25W, and the maximum ringing volume is 100dB. After power on, the doorbell will ring and the indicator light will flash.

Press the volume key briefly to switch the volume. There are five levels of volume that can be controlled. After setting, it can be saved automatically. Even if it is used after power failure, the original setting value will still be maintained. Short press of music key can switch 16 pieces of music circularly, long press of volume key or music key for more than 3 seconds until the indicator light starts to turn on and off gradually.

When setting the ringing tone of the receiver, you can also add a pair of codes, as long as you press the transmitter after setting the ringing tone. Through code matching, you can flexibly drag multiple transmitters to separate the front and rear doors to correspond to different ringtones, or drag multiple receivers, which is suitable for family users with large residential areas. If you want to give up the code matching setting, simply press the volume key to launch the code matching mode.

During the one week trial of Linbell G4, the self generating wireless doorbell will be used several times every day. Sometimes, relatives and friends will use it more frequently. In the past week, I used the smart socket to check the power consumption of the receiver. The data shows that only on the 19th day did I use 0.01 degree point. In other times, the power consumption is even smaller. The standby power consumption is very low, and there is not much additional invisible consumption.

The overall design of Linbell G4 is simple and elegant. It is easy to operate and generate electricity when you press it. You can feel the sense of technology around you. In addition, the Linbell G4 signal has a strong ability to penetrate the wall to meet the transmission needs of complex buildings, while flexibly implementing one to many different code matching functions. The low-power chip reduces the power consumption, which makes me feel more comfortable using it. On the premise of practicality and stability, we integrate more science and technology to bring users a surprise, and our family is very satisfied.

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