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Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.
The 500-W is a surface-mount contact designed for door position monitoring within GRI 500 series access control systems. It delivers reliable door state reporting (open/closed) across institutional, commercial, and residential deployments. The 5VDC operating voltage integrates with standard GRI 500 series infrastructure without additional power conditioning. Install it directly to door frames where you need distributed door status across multiple access points — typical use cases include multi-door facilities, emergency exits, and perimeter entry monitoring where real-time door state feedback supports both security and operational workflows.
The 500-W mounts directly to GRI 500 series systems and compatible door frame assemblies. It operates at 5VDC and pairs with standard GRI access control panels and monitoring infrastructure. Confirm your host panel supports 5VDC dry-contact or relay input before deployment. If your facility uses higher voltage systems (12VDC or 24VDC), verify voltage compatibility with your control panel or consult your system integrator.
Surface mounting requires standard hardware and alignment with the door frame strike edge. The 500-W uses a dry-contact relay output — wire directly to your access control panel's door sensor input. No mechanical moving parts means minimal maintenance, but ensure the contact surfaces remain clean and free from corrosion or paint overspray during installation. Test door opening and closing cycles after installation to confirm consistent signal reporting. For facilities in high-humidity or wet environments (near HVAC drains, equipment rooms, or areas prone to condensation), inspect periodically and consider protective conduit or housing to prevent signal dropout from moisture accumulation on the contact terminals.
Manufacturer-verified compatible cameras, recorders, mounts, accessories, and licenses for this product. Adjust quantities and add the entire bundle to your cart in one click.
4" surface mount door contact for commercial access control systems
4" surface mount contact for door monitoring & strike control
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