Ready to use: This waterproof wireless home doorbell is paired before delivery. No wiring or electrician installation is required during use, and installation can be completed in 1 minute: plug the receiver into the outlet and it's ready to use. [ Long Distance]: This high-frequency electronic technology wireless remote control doorbell adopts FM signal mode, which has strong anti-interference ability and one-to-one signal matching. Don't worry about poor signal connection beside. And the detection range is up to 600 feet in an open environment. High-definition temperature and humidity time displayThe wireless doorbell is equipped with a temperature and humidity sensor , which can understand the temperature and humidity changes in the indoor environment in real time, allowing you to enjoy a healthy life. Time reminder function, so you won't miss any important moment. Weatherproof and energy saving: The wireless battery doorbell is made of high quality ABS material, which has excellent flame retardant and flame retardant properties. Operating temperature : -4F -140F. IP45 dustproof and waterproof protection. The transmitter uses high-end self-generation performance without installing batteries. Exquisite appearance and high quality: The doorbell has updated 38 songs, and the volume is adjustable in 4 levels. There are 4 adjustable volumes (with mute function) from 0dB to 100dB. We have advanced automation equipment for high precision placement. We strictly control product quality. If something is wrong, please contact us as soon as possible to find a solution.