36 Songs Wireless Receiver Remote Control 100M Waterproof Doorbell Door Bell 100% brand new and high quality Remind you the coming of your guests by lovely songs and LED light. Simple, wireless installation, avoid troubles and save money. Remote control range up to 100m in the open air, suitable for homes and high-rise building. All day long anti-interference system, avoid interferences outside or between neighbors. Waterproof design, you can install it on your gate without worrying about the rain. With this smart doorbell, you will never miss any guests! With 1 remote control (transmitter) and 1 receivers.