Parameters: - Size of push-button:3.27*3.27*0.31 inch (Attention to the size of bell push button, it is big size ) - Size of bell receiver: 3.27*3.27*0.83 inch (excluding plug size) - Working Frequency: 433 MHz. - Transmitter is powered by itself. (No need battery) - Power supplier of receiver: (AC 85V-260V) - Volume: 3 levels adjustable. (max 110 dB, with mute mode) - Transmitter button working environment: -40 C - 60 C. - Plug type of receiver: original UK plug. Features: - No need battery for either bell-push button or receiver. - The transmitter button is IP7 class water-proof, it can work normally after dipping into water for a short while. - Wireless doorbell, wireless distance is > 80 m (262 feet) in an open area. - Very good ability of passing through walls (2-3 walls). - Transmitter service life is up to 200000 times pressing. - 25 selectable high quality ringtones. - Receiver has mute mode to avoid disturbance. - Receiver is powered by AC 85V-260V. - LED indicator in receiver (blue light). Package list: - Doorbell Transmitter (button) x 1 (with 3M adhesive pad on bottom) - Doorbell Receiver x 1 - Back plate x 1 - Screw x 2 (with hole fillers) - User manual x 1 (in English) - Welcome sticker x 1 (with 3M tape, reminder to guests of ringing the bell) Attentions: - Don't install the transmitter on any metallic substrate, which will reduce the wireless control distance. - Pay attention to the size of the transmitter button, and make sure you have enough space to install it. - Don't place the receiver closed to other appliances like TV etc.
