*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.
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
Package Size: Approach. 12.6*7.7*5.8cm / 5*3*2.3in
Package Weight: Approach. 130g / 4.6oz
1 * Doorbell Touch Button
1 * UK Doorbell Chime
1 * Set of Mounting Screws
1 * Mounting Sticker