SAY NO TO BATTERY! NO CABLING, SO EASY to INSTALL!
Specifications
Working Voltage: AC 100~240 V (receiver)
Operating Temperature: -10~+40℃（receiver), -40~+60℃（transmitter）
Sound Volume : 85 dBA@ 3ft (1m)
Transmitter Power Consumption: less than 900mW
Transmitter is waterproof
Working Frequency: 433 MHz
Dimensions: 68*86*71 mm(chime), 46*88*31mm(button)
wight: 85 g (chime), 62 g (button)
Ring tone: 25 polyphony ring tones
Tech intro: 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 change the mechanical energy into electric.Then the wireless module of the button sends the signals to receiver.The receiver receives the signals and plays music/react with blue led light which around the button in the chime blink.
Feature:
1. No battery required for the button, save your time and money
2. Get rid of wire, keep your house clean and safe
3. 1 min easy installation,with adhesive pad or screws
4. 3 sound levels and 25 ring tones
5. Endure high& low temp and the button is waterproof
6.120 m work range in open area
7. No crosstalk
Product Certificates: CE RoHs
If you have any questions, please feel free to ask me.

• NO battery self-powered button
• 3 sound level and 25 ring tones
• The waterproof button can be pressed over 100000 times
• long working range:120 m (open area)
• endure high&low temperature

NO battery self-powered buttonAugreener