Lock Size: 250Lx48.5Wx25H(mm) Armature plate: 180Lx38Wx11H(mm) Holding Force: 280kg(600Lbs) Voltage: 12/24VDC+10% Current Draw: 12V/500mA, 24V/250mA Aptational Bracket: ABK-280UL, ABK-280L, ABK-280ZL Signal Output: Dry Contact,Max Rating of Contact Current 3A LED indicates the door is unlock,Green indicates the door is lock Suitable for: Wooden door, glass door, metal door, fireproof door Operating Temp: 10óª+55í+(14-131F) Suitable Humidity: 0~90%(non-comdensing) Finishes for Shell: Anodized aluminum 12pcs/ctns