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September 08, 2026 2 min read
Specifications for the SECO-LARM SD-211-BD1Q electro-mechanical RIM lock and SD-231-ND1Q latch — heavy-duty, fail-secure locking for doors and gates.
Specifications for the SECO-LARM SD-211-BD1Q and SD-231-ND1Q Electro-Mechanical RIM Lock/Latch — a heavy-duty, fail-secure locking device for doors, side gates, and pool gates.
The SECO-LARM electro-mechanical RIM lock/latch offers both door and gate security and user convenience in a heavy-duty package. These devices securely lock doors, side gates, pool gates, and other entrances, and can be unlocked from inside via a built-in electric switch or from outside with the included keys.
| Model | Type |
|---|---|
| SD-211-BD1Q | Electro-Mechanical RIM Lock |
| SD-231-ND1Q | Electro-Mechanical Latch |
| Spec | SD-211-BD1Q | SD-231-ND1Q |
|---|---|---|
| Operating voltage | 12VDC | |
| Current draw (standby) | 0A @ 12VDC | |
| Current draw (active) | 3A @ 12VDC maximum | |
| Static strength | 2,250-lb (1,020kg) | |
| Endurance | 500,000 cycles (factory tested) | |
| Operating temperature | -40°~122° F (-40°~50° C) | |
| Lock body dimensions | 5 1/8" x 3 15/16" x 1 11/16" (130x100x43 mm) | |
| Strike body dimensions | 1 7/16" x 3 15/16" x 1 5/8" (36x100x41 mm) | |
The lock body mounts to the door frame with the strike body on the door itself, suitable for either out-swinging or in-swinging gates/doors. The lock is positioned on the outside of the frame with the mating strike on the inside face of the door (or vice versa, depending on swing direction).
This SECO-LARM product is warranted against defects in material and workmanship for one (1) year from the date of sale to the original consumer customer. SECO-LARM's policy is one of continual development; specifications and pricing are subject to change without notice, and SECO-LARM is not responsible for misprints.
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