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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 N20RS-TWG-W is a 3/8" recessed wide gap magnetic contact switch designed for discreet installation in commercial and industrial environments. It features a closed-loop configuration and includes an MM-600 rare earth magnet, providing a reliable trigger for alarm systems when a protected opening is breached. This sensor is ideal for applications where tamper resistance and a low profile are critical, such as monitoring doors, windows, or cabinets in security systems.
This sensor is designed to integrate with most alarm control panels and security systems that support closed-loop contact inputs. It is compatible with systems requiring a wide gap magnetic switch for reliable detection. Specific compatibility may depend on the panel's input resistance and loop configuration. It is recommended to verify your system's input specifications against the sensor's characteristics.
Installation requires a 3/8" diameter hole for the sensor and a corresponding hole for the magnet. Ensure proper alignment between the sensor and magnet when the protected opening is closed to maintain the closed-loop state. The terminals allow for secure wire connections. For optimal performance, mount the sensor and magnet on non-ferrous surfaces. The wide gap design allows for greater tolerance in alignment compared to standard sensors.
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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