eu plug Wireless Waterproof Door Bell,Wall Plug-in Remote control Doorbell,1 transmitter+1 receiver AZ4947 Feature£ºPlugs into Any Standard Wall Outlet:Easy to install and operate, it plugs into any standard wall outlet. Use it for front, side, or back doors to gain security and peace of mind.4 Volume Levels4 levels of adjustable volume from 10db to 85db300m Operating Range:strong wireless signals up to 300m/1000 feet to cover your home or business in an open spaceChoice of 36 Chimes:This unit lets you choose the best way to be notified when someone is at your door. In addition to your choice of 36 selectable chime tunesFlashing Light Indicator:The flashing light indicator that gives you a visual form of notification(an excellent feature for the hearing impaired).Sleek Design & Waterproof:The weather-proof bell setting on front/back door can stand up to rain, snow and temperature changes, against rainy days or cold winter. Simple installation:Two steps. Fix the remote transmitter on wall or door frame with the adhesive tapes or screws provided in the package, plug the receiver into any UK standard socket.Notice: please take out the plastic gasket of insulation before installing the receiver.Specifications:Internal Sounds: 36 chimesVolume: 4 level adjustable levels (25db~85db)Transmitter Power: 1 x 12V 23A batteryInput Voltage: AC110-240V 50/60HZPackage Includes :1 x Push Button (Transmitter)1 x Plug-in Chime (Receiver)2 x Screws1 x Flat-head screwdriver1 x User Manualor1 x Push Button (Transmitter)2 x Plug-in Chime (Receiver)1 x Flat-head screwdriver1 x User Manual2 x Screwsor2 x Push Button (Transmitter)1 x Plug-in Chime (Receiver)2 x Screws1 x Flat-head screwdriver1 x User Manual