General description This wireless doorbell is designed for convenience and durability, featuring a waterproof design and no battery requirement. It includes a temperature and humidity display, along with a time reminder function, ensuring you stay informed about your environment and important moments. Technical specifications Operating temperature: -20°C to 60°C Detection range: up to 180 meters in a barrier-free environment Volume levels: 4 adjustable levels from 0 dB to 100 dB Waterproof rating: IP45 Installation No wiring or electrician installation is required. Simply plug the receiver into a socket, and it is ready to use in under one minute. Usage This wireless doorbell features 38 melodies to choose from, allowing you to customize your doorbell sound. The self-generating power transmitter eliminates the need for batteries, making it an energy-efficient choice. Other information Made of high-quality ABS material with flame-retardant and fireproof properties Equipped with