Nexa MLR-1923/SET Wireless doorbell, Plug-in, complete with push buttonSet with doorbell and push button. In addition to functioning as a normal doorbell with a push button, the doorbell can also receive signals from a motion detector and magnetic contact or remote control if desired. There are 6 selectable tones so different transmitters can give different ringtones. The sound level can be set in 4 different levels; High – Medium – Low – Mute.The doorbell has a blue LED indicator.- Plug-in (220-240 V)- 32 memory locations- Easy installation- 6 selectable ringtones- 4 sound levels- Up to 150 meters rangeSpecificationsPower source doorbell: 220 –240 V ~50HzPower source push button: Battery, 1 x CR2032 (included)Protocol: System Nexa (433.92 MHz)Range: Up to 150 mPower consumption: < 1 WIP classification: Push button IP44Dimensions of doorbell (W x H x D): 59 x 100 x 37 mmDimensions of push button (W x H x D): 30 x 70 x 15 .5 mmProduct Document