General description This waterproof wireless doorbell is designed for easy installation and convenience. It comes pre-paired, requiring no wiring or electrician assistance. Simply plug the receiver into a socket, and it's ready to use in just one minute. The doorbell features a temperature and humidity sensor, allowing you to monitor indoor conditions in real time, along with a time display to keep track of important moments. Technical specifications Working temperature: -4°F to 140°F Detection distance: up to 600 feet in a barrier-free environment IP45 dustproof and waterproof rating Volume levels: 4 adjustable levels from 0dB to 100dB Material: high-quality ABS with flame retardant and fireproof properties Number of melodies: 38 different songs Installation No wiring or electrician installation required Installation can be completed in 1 minute by plugging the receiver into a socket Usage Monitor indoor temperature and humidity in real time Use the time display to keep track of