Features - Purpose: Intercom system - Power supply type: Indoor - Power current type: AC-to-DCInput voltage: 100 - 240 VInput frequency: 50 - 60 Hz - Input current: 0.4 AOutput voltage: 12 VOutput current: 1.5 ACompatibility: DoorSpeak 1, 2, 4Design - Product colour: Black - Packaging data - Quantity per pack: 1 pc(s)Other features - Maximum current: 1.5 AQuantity: 1