Operating voltage: DC12V/DC24V Working current: 500mA/250mA Withstand tensile force: 280KG±10% Material: high-strength aluminum alloy Size: lock body: length 250.0 x width 47.7 x thickness 27.5 (mm); suction plate: length 180.0 x width 38.0 x thickness 11.7 (mm) Safety type: power off and open the door