Wireless doorbell, 45 melodies, 5 volume levels, IP55 waterproof wireless doorbell, 300 m doorbell kit, LED flash, 2 plug-in receivers Doorbell wireless, 45 melodies, 5 volume levels, IP55 waterproof wireless doorbell, 300 m doorbell kit, LED flash, 2 plug-in receivers Highly efficient transmitter: consumes very little current; uses a CR2032 lithium battery with a maximum lifespan of 3 years; is watertight. dust and water IP 55; Operates in a temperature range of -4°F to 140°F; 5 ringer options: 40mm stereo speakers deliver rich, clear sound; 4 adjustable volume levels with one intensity level maximum of 85 dB and an LED light to help hearing impaired people hear more. remember. Easy installation “Plug and Play” This wireless chime is easy to operate. install and install To use, simply plug the receiver into a household wall outlet and use the included 3M double-sided tape to mount the transmitter box to the receiver. the exterior. Installation completed in 3 minutes! No need to pull