Crenova 36 Tunes Song LED Waterproof Wireless Remote Control Receiver Doorbell Home Security Door Bell Chime (Black, Waterproof LED) Remind you the coming of your guests by lovely songs and LED light. Simple, wireless installation, avoid troubles and save money. 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! this item is european plug change US plug.