General description The Black Wireless Doorbell offers a reliable and convenient solution for your home entry needs. With a wireless range of up to 400 meters (1312 feet), this doorbell ensures you won't miss any visitors, even from a distance. It features three plug-in receivers and a selection of 52 melodies, allowing you to customize your doorbell sound to suit your preference. Technical specifications Wireless range: 400m/1312ft Volume levels: 5 adjustable levels, max volume 115dB Melodies: 52 ringtones available Battery type: CR2032 lithium battery with a 3-year service life Operating temperature: -20°C to 60°C Waterproof rating: IP55 Installation Easy installation with no wiring required Includes two screws, two wall plugs, a wrench, and double-sided tape for mounting Simply plug the receivers into a socket Usage Press the next or previous button to select from 52 melodies Memory function retains last selected melody and volume after power outages