M525 Wireless Doorbell System Waterproof Transmitter 32 Songs Optional Welcome Chime Welcome Security Alarm System Build-in Antenna
Features: *Easy to Install: Just plug the receiver into power socket and attach the waterproof touch doorbell button on door, you don't even necessarily have to make holes or damage anything. *32 Melody Optional: 32 ringtones included will not let you feel bored, you can select on you like. Avoid the same ring with the neighbors. 4 levels adjustable volume. *Strong Signal, 150m Long Distance Transmission: Long operating range can be up to 500ft(150m) in open space, great for large house including villas, apartment, offices, shops, warehouses, etc. *Learn Functions: One transmitter can pair with several(max 30) receivers, and one receiver can pair with several(max 30) transmitters. Customize your doorbell according to your need. *Doorbell Function/Welcome Alarm/Emergency Alarm All in One. Emergency Alarm: Some inconvenient people can call in an emergency and get help as soon as possible.
Specifications: Doorbell Chime Working Voltage: AC 100-240V Operating Current: 8-15 mA Standby Current: 3uA Touch Button Battery: 27A 12V (not included) Wireless Transmission Frequency: 433 MHz Wireless Transmission Distance: 150 meters (in open areas) Working Temperature: -10 to 50 degrees centigrade Humidity: Maximum 90% Doorbell Chime Size: 93 * 59 * 18mm Touch Button Size: 71 * 44 * 15 mm