General description Self-powered wireless doorbell kit includes one plug-in receiver and one transmitter. Unlike traditional wireless doorbells, this model eliminates the worry of dead batteries, ensuring continuous operation. Technical specifications Operating range: up to 1000 feet/300m Temperature range: -20°C to +55°C Waterproof rating: IP44 Volume levels: 4 adjustable levels (0dB-85dB) Melodies: 36 different melodies Installation Plug the wireless doorbell receiver into a socket. Fix the transmitter on the wall or door using adhesive. Usage The wireless doorbell features a memory function that retains your last melody choice and volume level after a power outage, making it practical and user-friendly.