Electromagnetic Lock, Fail Safe, Opening Action Electromagnetic, Steel, Amp Draw @ 12V 240mA, Amp Draw @ 24V 240mA, Input Voltage 12/24V DC, Projection from Wall (In.) 2 1/2 in, Features Built-In Remote Lock Status (RLS) Indicated Whether the Magnet is Locked or Unlocked, Versatile Face or Bottom Through-Bolt Mounting, Total Projection (In.) 2 1/2 in, Holding Force (Lb.) 1,500, Armature Length (In.) 7 7/8 in, Armature Width (In.) 2 3/8 in, Armature Depth (In.) 5/8 in