Ready to use: This waterproof wireless doorbell compatible the home is paired becompatiblee delivery. No wiring or electrician installation is required during use, and installation can be done 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 pattern, which has strong anti-interference ability and one-to-one signal matching. No need to worry about bad connection with the signal beside. And the detection distance can reach 600 feet in an unobstructed environment. HD Display compatible Temperature, Humidity and WeatherThe wireless doorbell is equipped with temperature and humidity sensor, which can know the indoor environment temperature and humidity change in real time, so so that you can enjoy a healthy life. The time reminder function makes you never miss any important moment.