Note: This item comes with UK plug, please confirm the voltage of your area before purchasing.DescriptionOur wireless doorbell is made of premium material, anti dust, and rainproof can withstand high temperatures, and has no electromagnetic radiation. The working distance is wide, and there are music and light reminders. Can be installed in front of apartments, houses, and offices to welcome your guests.Features-Color: Black -Material: ABS -Doorbell launcher size:7.50X5.10X2.00cm/2.95X2.00X0.79in -Doorbell receiver size:9.50X6.50X2.40cm/3.73X2.55X0.94in -Working distance: 300 Meters -Ringtones: 60 Ringtones -Volume: 5 Gears (can be muted) -Power supply voltage: 110-230V -Power supply mode: The receiver supports AC 100-240V voltage; the transmitter uses a 12V 23A battery -Working frequency: 433MHZ -Working temperature: -30 C~ 70C-The wireless doorbell has a long working distance of 300 meters and will not interfere with other devices in your home. -The cordless doorbell is designed with multiple pieces of music, which can be switched arbitrarily, and the volume level can also be adjusted. -Using microprocessor control, double-sided PCB micro-power consumption design, wireless doorbell reception is fast and sensitive. -The wireless doorbell is made of ABS material, anti dust, and rainproof, and can withstand high temperatures, with no electromagnetic radiation. -The receiver can be installed where there is a socket. The transmitter can be mounted with the included double-sided tape or screws.