GV-38 Surface Mount Magnetic Contact Switch for Normally Closed (NC) Windows (White)

The GV-38 is a compact, surface-mounted magnetic contact switch designed for protecting windows, doors, and hatches in wired intrusion alarm setups. Enclosed in a durable white ABS housing measuring 27 x 14 x 8 mm, its slim profile allows seamless, low-profile attachment along window frames and sliding tracks.

Operating on a Normally Closed (NC) configuration—where the circuit remains closed while the magnet is in close proximity and opens upon separation—the GV-38 integrates easily into standard security panel zone loops. It delivers reliable perimeter intrusion monitoring for residential homes, office buildings, and commercial facilities.

Key System Features & Functionality

• Normally Closed (NC) Operation: Opens the alarm circuit when the window or door opens, instantly triggering security zone alerts.

• Ultra-Compact Profile (27 x 14 x 8 mm): Discreet dimensions allow neat installation on narrow window frames, casings, or sash tracks.

• High-Impact ABS Housing: Durable, flame-retardant white finish blends with modern PVC, wood, and aluminum window frames.

• Hermetically Sealed Reed Switch: Protects internal contact elements from moisture, dust, and oxidation for long-term operational lifespan.

• Easy Surface Mount Setup: Mounting screw slots and pre-applied adhesive backing support fast, secure attachment on multiple surfaces.