| 52 ring tones300m range in the open air4 level volume,adjustableLED indicator for receiverFor family commercial residential area,office building,hospital,restaurant,factory.Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so onType: DoorbellsRingtones:52 pcsColour: BlackMaterial: ABSDIY Supplies: ElectricalDoorbell Type: WirelessPower Source: AC,BatteryPower supply: AC100-240VWorking frequency: 433MHZRing Tone: 52 ring tonesWaterproof : yesVolume:4 files 10-110dbBattery mode: 12v 23A battery (not include battery)Receiving distance: 300M Remote (in open area)Suitable for: Home,office,villa,hospital,school,factoryThe transmitter 12V23A battery factory pre-installed … | |