Wireless Smart Doorbell Operating at Wide Range

Features: *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. Specifications: Touching button batteries: 23A 12V(included) External input of door chime: AC110V (US)/ AC 220V(EU,UK,AU) Volume: 0 110dB Range: Up to 1000 feet/300m(open space) Number of melodies:52 Waterproof: IP44 Power consumtion of push button: <10Mw Working frequency:433.92MHz Material: ABS Touching button Size:8*4*2cm Touching button Weight:33g Chime Size:8*8*5cm Chime Weight:73g Package Information: Package Size: Approx.12.7*9.8*7.7cm/5*3.86*3.03in Package Weight: Approx. 171g/6.03oz Package List: 1* Touch button 1* Chime 1 * Bag of Screws 1* User Manual(English)