KERUI 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 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





Package Information:

Package Size: Approach. 12.6*7.7*5.8cm / 5*3*2.3in 

Package Weight: Approach. 158g / 5.6oz





Package List:

1 * Doorbell Touch Button

1 * US Doorbell Chime 

1 * Set of Mounting Screws

1 * Mounting Sticker