An easy to install, mains powered doorbell with integral 13A socket and remote push button, providing up to 80m wireless range. The waterproof push button simply installs against a door frame using the self-adhesive pad provided. House numbers and names can be displayed on the removable name card, protected beneath a clear plastic cover. A choice of 38 melodies, alerts users to visitors via a simple, plug through chime that can be moved as required within a 80m operating range of the push button. Auto-match code function to prevent outside interference from other wireless devices in the immediate area of the mains unit. Ideal for use in larger homes and business premises or as an assistance button for the elderly.Power supply : receiver: 230Vac, 50HzvbCrLfBattery : transmitter: 12V (23A)vbCrLfFrequency: 433.92 MHz (±150kHz)vbCrLfRange: 80m (Open air)vbCrLfDimensions : receiver: 116 x 47 x 68mmvbCrLfDimensions : transmitter: 88 x 20 x 36.5mmvbCrLfWeight : receiver: 129gvbCrLfWeight : transmitter: 25g