BS Wireless Doorbell Kit - 52 Melodies, 4 Level Volume, 2 Plug-In Receivers & 1 Weatherproof Push Buttons Operating at 920 Feet with Sound and LED Flash, Waterproof Doorbell Chime Easy for Home and Of

Specifications:Voltage of Plug-In Smart Receiver: AC 85V ~ AC 265VBattery in Transmitter: 12V 23A Alkaline BatteryPower Consumption (Transmitter): < 10mWWireless Range: 920 ft in Open Air; 100~500 ft w/ Metal Security doors and WallsSelectable Ring Tone: 52 OptionsVolume Range: 4 Levels (up to 110 dB)Working Temperature: -4 °F-140 °FWaterproof (Transmitter): IP44Package Size: 4.3"Length 3..5" Width 3.5" HeightPackage Includes:- 1 x Push Button (Transmitter)- 2 x Plugin Chime (Receiver)- 2 x Screws- 1 x Double-Sided Adhesive Tape - 1 x User Manual-1x12V 23A Alkaline Battery inside the push button