【Ready to Use】: This waterproof wireless doorbell for home 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 socket and it is ready to use. 【Long Distance】: This wireless remote control doorbell with high-frequency electronic technology adopts an FM signal scheme, which has strong anti-interference ability and one-to-one signal pairing. No need to worry about poor connection with the signal next door. And the detection distance can reach 600 feet in an obstacle-free environment. 【HD Display for Temperature, Humidity and Time】The wireless doorbell is equipped with a temperature and humidity sensor, which can know the change of indoor environment temperature and humidity in real time, so that you can enjoy a healthy life. The time reminder function allows you to never miss any important moment. 【Weatherproof and Energy】: The wireless battery-free doorbell is made of