KAMEP Original Video doorbell Camera Chime Adjustable Multi-Tone Plug-in for doorbell J9

A:This Smart Chime Suit for our video camera J9,Support wifi 2.4 GHz
B:Easily set up by plugging into a standard outlet and connect to our smart doorbell.
C:It is very easy to operate from the mobile phone APP, you can receive the doorbell request from the visiting guests at any time, and answer in time.
D:need to install 2pcs batteries, connect to the outlet at any time to charge.