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September 08, 2026 3 min read
Full installation manual for the SECO-LARM SD-211-BD1Q Electro-Mechanical RIM Lock, a 12VDC fail-secure lock for pedestrian gates or doors with mechanical key override.
Manual for the SECO-LARM SD-211-BD1Q Electro-Mechanical RIM Lock — a 12VDC fail-secure lock for pedestrian gates or doors, with a fully mechanical manual-override key so it can still be unlocked if power is lost. Non-handed design fits left, right, in-swing, or out-swing doors.
Designed for pedestrian gates or doors, the SD-211-BD1Q can be triggered by an access control system, unlocked by key from outside, or opened by manually pushing the button from inside. Mounts on both in-swing and out-swing doors; non-handed.
Lock body, strike body, key plate, key guard, cylinder lock, 3 keys, 11 M5 self-tapping screws, 4 M3 self-tapping screws, 2 long screws, 2 lock body cover screws, mounting template.
| Operating voltage | 12VDC |
| Current draw | Standby: 0A@12VDC; Active: 3A@12VDC max |
| Static strength | 2,250 lb (1,020kg) |
| Endurance | 500,000 cycles (factory tested) |
| Operating temperature | -40° to 122°F (-40° to 50°C) |
| Dimensions | Lock Body: 5-1/8"x3-15/16"x1-11/16" (130x100x43mm); Strike Body: 1-7/16"x3-15/16"x1-5/8" (36x100x41mm) |
The recommended distance between the strike body and the lock body is 3/16" (5mm). Rotate the latch to adjust between in-swing and out-swing configuration.
Note: copy keys as necessary and save one as the master key — replacement keys are not available.
| Issue | Check |
|---|---|
| Does not lock | Lock is engaging the strike body; mechanism moves freely; lubricate moving parts with graphite lubricant |
| Does not unlock | Lock is engaging the strike body; correct input voltage present; power supply has sufficient current |
Electro-Mechanical Latch (SD-231-ND1Q), Electromagnetic Gate Lock (E-942FC-1300), Heavy-Duty Outdoor Stand-Alone Keypad (SK-3523-SDQ), No-Cut Electric Door Strike (SD-993C-D3Q).
Warranted against defects in material and workmanship for one (1) year from date of sale to the original customer. SECO-LARM's obligation is limited to repair or replacement of the returned (transportation prepaid) unit.
Important: users and installers are responsible for ensuring this product complies with all national, state, and local laws and statutes related to monitoring and recording audio/video signals.
SECO-LARM U.S.A., Inc. — 16842 Millikan Avenue, Irvine, CA 92606 | (949) 261-2999 / (800) 662-0800 | www.seco-larm.com
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