*It supports wide range, up to 1000-feet (300 meters) range at open area, can be widely used for home, office, warehouse, etc.
*5 levels of adjustable volume setting including mute, volume from 0dB to 110dB, with 52 melodies for choices, make sure you never miss any guest.
*Easy to install and use: Install it with double-sided tape or screws. No wires required.
*The indoor machine supports power off memory function, once pulling down in home, indoor machine automatically remember the former ring and you won't lose your selected melody!
*Support IP44 waterproof and low consumption.
Touching button batteries: 23A 12V(included)
External input of door chime: AC110V (US)/ AC 220V(EU,UK,AU)
Range: Up to 1000 feet/300m(open space)
Number of melodies:52
Power consumtion of push button: <10Mw
Touching button Size:8*4*2
Touching button Weight:34g
Package Size: Approx.12.7*9.8*7.7cm/5*3.86*3.03in
Package Weight: Approx. 170g/6oz
1* Touch button
1 * Bag of Screws
1* User Manual(English)