General description This wireless doorbell is designed for convenience and functionality, featuring a waterproof chime and two plug-in receivers. It is equipped with a temperature and humidity sensor, allowing you to monitor indoor conditions in real-time. The doorbell is ready to use upon delivery, requiring no wiring or electrician installation, making setup quick and easy. Technical specifications Detection distance: up to 600 feet in a barrier-free environment Working temperature: -4°F to 140°F IP45 dustproof and waterproof protection Volume levels: 4 adjustable levels from 0dB to 100dB 38 different ringtones available Installation Plug the receiver into a socket for immediate use No wiring or electrician installation required Usage Monitor indoor temperature and humidity Receive alerts with adjustable volume and ringtones Other information Made of high-quality ABS material with flame retardant and fireproof properties Self-generating transmitter, no batteries needed