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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 GRI 8080-TWG-B is a 3/4-inch recessed magnetic contact designed for steel doors and frames. It provides a closed-loop alarm trigger when the door is opened, ensuring that security systems are alerted to unauthorized access. This sensor is ideal for installations where a flush-mount, tamper-resistant contact is required, offering a clean aesthetic without compromising security. The wide gap detection capability means it can maintain a secure connection even with slight door movement or misalignment, reducing false alarms.
This sensor is designed for use with most standard wired alarm control panels and security systems that accept normally closed (NC) loop contacts. It is compatible with systems requiring a wide gap sensor, typically up to 1.5 inches, making it suitable for various steel door applications where standard contacts may not suffice due to frame depth or door construction. The terminal connections allow for flexible integration into existing wiring infrastructure.
Installation requires drilling a 3/4-inch hole in the door and frame. The sensor and magnet should be mounted so they are centered when the door is closed. Ensure the gap between the sensor and magnet does not exceed 1.5 inches when the door is closed to maintain loop integrity. The terminals facilitate secure wire connections, suitable for professional installation into alarm panels.
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.
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Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.
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