US Plug Augreener Wireless Cordless Wireless Control Doorbell Battery-free 25 Chime Digital Doorbell

Description: US Plug Augreener Wireless Cordless Wireless Control Door Bell Battery-free 25 Chime Digital 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 can change the mechanical energy into electric energy. Then the wireless module of the button sends signals to receiver. The receiver receives the signals and plays music. Features: No battery. No wire. Easy installation. Maintenance-free. Never need to change batteries, more convenient. Waterproof. Soak the button in living water for 4 month, it can work well. Never be afraid of rain and snow or other humid environments. Work well at -40 centigrade-+60 centigrade. Perfect for hot summer or cold winter 200 meters in the open area. Signals can easily pass through walls, doors and floors. Note: Do not install on an iron door as it will effect the normal use. Specification: AG 101 N Chime(Receiver) Button(Transmitter) Power Supply AC 110/220V Self-powered Operating Temperature -10 centigrade to +40 centigrade -40 centigrade to +60 centigrade Range(Open Field) 200m(in the ideal environment) RF Frequency 433MHz Sound Level 85dBA@3ft(1m) Power Consumption