Power Source : Battery
Doorbell Type : Wireless
Color : White
Function : Doorbell, alarm, welcome alarm all in one
wirelss distance : 150M
Working Voltage : AC 100-240V
working current : lower than 100MA
working frequency : 433MHZ
working temperature : -10-50 degree centigrade
Accessory support : Learn 30 accessories (Doorbell transmitter, detector, remote control)
Volume : 4 levels adjustable volume
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