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Help CenterRemote Control Doorbell Volume Control Usb Smart Doorbell With High- Quality
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new product -- remote control doorbell volume control usb smart doorbell with high- quality
Tech Intro of usb doorbell
Battery-free wireless doorbell requires no battery and no wire. It uses the unique energy harvesting technology and ultra low-power wireless technology with worldwide patents pending.
When users press the button, energy converting module inside will convert the mechanical energy into electrical energy. The wireless module of the button will send signals to the receiver, which will receive signals and play music.
Advantages of battery- free USB doorbell
1.battery-free
2.self-powered
3. waterproof transmitter
4. working range in the open area 80 meters
5. convenient to use
6. 38 phlyphony ring tones
7.USB port receiver
Specifications of battery-free USB doorbell
U2 |
Chime (receiver) |
Button( transmitter) |
Power supply |
DC 5V |
Self powered |
Operating temperature |
-10°C~50°C |
-40°C~ 50°C |
Range ( open field ) |
80m(open area) |
|
RF Frequency |
433MHz |
|
Sound level |
80dB@ 3ft(1m) |
|
Power consumption |
100mW |
|
waterproof |
|
Yes |
Operating Forces |
|
10N |
Dimension] |
78*35*18mm |
79*44*33mm |
Weight |
23g |
55g |
Ring tone |
38 polyphony ring tones |
|
Pictures of battery- free USB doorbell
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