The SD-993S-UB from Seco-Larm is a U-Bracket designed specifically for the SD-993B-SS, providing exceptional concealed security for remote access and exit control of various aluminum and steel doors or gates. Its compact design and robust features ensure reliable performance in a variety of installations.
Seco-Larm SD-993S-UB U-Bracket Features
- Concealed Security: Offers remote access and exit control for enhanced safety and convenience.
- Compact Design: Smaller size accommodates most metal door jambs for versatile installation.
- Durable Construction: Zinc-plated magnet and armature with aluminum anodized housing for long-lasting use.
- Versatile Compatibility: Works seamlessly with sliding, single-action, and double-action (swing-through) doors and gates.
- Keyless Entry Option: Compatible with an optional digital keypad for advanced keyless high security.
- High Shear Holding Force: Spring-loaded locking bolts and magnetic bond hold doors securely with approximately 1,500 pounds (680kg) of shear holding force.
- Fail-Safe Operation: Automatically unlocks if power is lost, ensuring safety during emergencies.
- Adjustable Armature Plate: Compensates for gaps between the door and frame for a perfect fit.
Seco-Larm SD-993S-UB Detailed Specifications
| Feature | Details |
| Product Type | U-Bracket for Glass Door |
| Model Number | SD-993S-UB |
| Compatibility | For SD-993B-SS |
| Material | Zinc-plated magnet, aluminum anodized housing |
| Shear Holding Force | Approximately 1,500 pounds (680kg) |
| Operation Mode | Fail-safe (unlocks on power loss) |
| Adjustability | Armature plate adjusts for door/frame gaps |



















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