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KERUI M521 Wireless Doorbell Kit Waterproof Touch Button 57 Songs Colorful LED light Home Security Smart Chimes Doorbell Alarm

Item Description:
1) Support multiple doorbell transmitter, suitable for large villa
2) 57 songs optional
3) Waterproof touch doorbell button
4) Learn 20 accessories
5) 4 levels adjustable volume
  • plug:
    EU Plug
    US Plug
    UK Plug
  • color:
(3000 available)
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  • Description
  • Reviews(23)
One doorbell host can add up to 20 buttons/detectors
One button can be add into unlimited doorbell host
You can buy compatible wireless botton in this link:
 Click here 

KR-M521 Home Use Wireless Doorbell with LED lights and Loud Speaker

57 Sound Optional
Build-in 57 new ringtones and 4 levels volume, up to 105db

Low Power Design

Multi Plug Optional

Easy to install

Long distance Transmission

Technincal Parameters
1. Working Voltage: AC 100-240V
2. Working Current: < 100 mA
3. Wireless Frequency: 433 MHz
4. Wireless Distance: 100 meters (Open area)
Average rating: 3.0 based on 23 reviews
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