1,500-lb. Shear Lock SD-993B-SS Shear Lock, Holding Force: 1,500-lb. (680kg) Access Concealed security for remote access and exit control of aluminum and steel doors or gates. Small size for use with most metal door jambs. Zinc-plated magnet and armature, aluminum anodized housing. Works with sliding, single-action, and doubleaction (swing-through) doors and gates. Connects to SECO-LARM Access Control Keypads for keyless high security. Spring-loaded locking bolts and magnetic bond holds doors securely in place with approximately 1,500-lb (680kg) of shear holding force. Fail-safe operation (unlocks if power is lost). Armature plate adjusts to compensate for gaps between door and frame. Specifications SD-993B-SS Operating Voltage 12 or 24 VDC Shear Lock Brackets Easy-to-use brackets for installing the SD-993B-SS on almost any surface or door. 420mA @ 12VDC, 210mA @ 24VDC Current Draw Max. 1/16" (2 mm) Door Gap Weight (Approx.) 2.6lbs. (1.18kg) SD-993S-SB Surface-Mount Bracket For surface mounting of Shear Lock (when recessed mounting is not possible). Dimensions: Adjust armature screws to compensate for the gap between door and frame. 7-1/8” (180mm) 5-13/16” (147mm) 1-1/16” (27mm) MAGNET ASSEMBLY Max. 2mm gap Armature adjustment screw Push off button ARMATURE ASSEMBLY SD-993S-UB 1-5/8” (42mm) 1-1/16” (27mm) Locking bolts 20 NEW Armature adjustment screw 1.949.261.2999 (CA & Int’l) U-Bracket For mounting the shear lock on most glass doors. 1.800.662.0800 Fax: 1.949.261.7326