Note: This item comes with , please confirm the voltage of your area before purchasing. Description The doorbell with simple and creative design, easy to use and easy to install. No need for network, no wiring, a good helper for home use. High launch technology, stronger penetrating power, let you easily hear the in the whole house. Features - Color: Black. - Material: ABS. - Size: 8.20X6.30X5.00cm/3.22X2.48X1.97inch. - Receiver voltage range: -230V. - Receiver operating temperature: -20 degree centigrade-55 degree centigrade. - Transmitter voltage range: 12V23A battery power supply. - Transmitter working temperature: -20 degree centigrade-65 degree centigrade. - Acceptance distance: 300 meters in a straight line. - Ringtones: 45 polyphonic music. - Volume: 0-110db (4 levels of volume can be adjusted). - Transmitter waterproof level: IP44. - : . - Setting different ringtones for different receivers can let you know which door is at. - Just the receiver into a socket, mount the doorbell transmitter on the wall or anywhere you want via -sided tape or screws - The door chime has been matched before shipment. All the required accessories are included in the package for an effortless installation - door bell kit has stylish modern design in classic color, excellent materials keeps itself from getting higher temperature & - Higher without worrying about obstruction, ensures you will never miss a visitor, even if you are a few rooms or on another floor Package list: 1 x doorbell transmitter 1 x doorbell receiver