TECKNET Self-Powered Wireless Doorbell, Waterproof Door Chime Kit, No Battery Required Push Button, Plug-Through Cordless Door Chime, up to 1300ft Range with 32 Chimes, LED Light, 5-Level Volume

Unique Door Bell Chime Kit with Socket: Great design solves the problem of ordinary wireless doorbells occupying sockets. Wireless doorbell for home with extra socket enables socket for other devices, such as charge your phone or tablet. Plug it into your wall socket and then plug appliances into it as normal
Self-Powered Wireless Doorbell Home kit: No batteries required for Both transmitter (push button) and receiver. When the transmitter is pressed, it generates electric power itself and sends stable signal to receiver.There is no need to worry about the unexpected situation that the wireless doorbell chime can not work when the battery is exhausted
Waterproof Wireless Doorbell: IP65 Rated transmitter with a waterproof ring structure, wireless doorbells for home can operating between -4°F and 140°F, withstands tough weather conditions