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September 08, 2026 2 min read
Installation instructions for the SECO-LARM SM-4103-LQ/W, a 3/8" rare-earth recessed-mount magnetic contact switch for sliding doors and windows.
The SECO-LARM SM-4103-LQ/W is a 3/8" (10mm) press-fit rare-earth recessed-mount magnetic contact switch, designed for protecting sliding doors and windows where installation space is limited. Its miniature size makes it easy to conceal.
| Spec | Value |
|---|---|
| Mounting Style | 3/8" (10mm) press-fit |
| Switch Size | 9/16" (14mm) stubby |
| Wire Leads | 18" (46cm) |
| Switch Type | SPST reed switch, ruthenium on gold underplating |
| Circuit Type | Closed loop (N.C.) |
| Max Gap | 1/2" (13mm) |
| Case Material | High-impact ABS plastic |
| Magnet | Rare-earth, nickel plated |
Lifetime Limited Warranty (US and Canada; 1 year for all other countries). SECO-LARM's obligation is limited to repair or replacement of defective parts if the unit is returned, transportation prepaid. Warranty is void for damage caused by acts of God, misuse, abuse, neglect, improper installation, or unauthorized repair/alteration.
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