Electromagnetic Lock, Surface Mount, Opening Action Manual, Steel, Amp Draw @ 12V 830mA/12V DC, Amp Draw @ 24V 450mA/24V DC, Input Voltage 12/24V DC, Projection from Wall (In.) 2 5/8 in, Features Integrated Three Position Key Switch for Reset, Manual Power-Up and Bypass Settings, Total Projection (In.) 2 5/8 in, Holding Force (Lb.) 1,650, Armature Length (In.) 7 3/8 in, Armature Width (In.) 2 3/8 in, Armature Depth (In.) 9/16 in, Lock Body Length (In.) 11 in, Lock Body Width (In.) 2 3/4 in