George Risk 400WG-W Surface Contact Hidden Terminal Wood White

Product Description

The GEORGE RISK INDUSTRIES INC. 400WG-W is a commercial-grade surface contact designed with hidden terminals for wood door and frame applications. Surface contacts are magnetic sensing components used in security and access control systems to detect the open or closed state of a door, window, or access point. The 400WG-W ships in a white finish, allowing it to blend cleanly into painted wood trim and frames. This contact is sold as an individual unit and is installed by alarm and security system technicians during new construction or retrofit security system work.

The 400WG-W is intended for commercial and light industrial security installations where a clean, low-profile appearance is required. Its hidden terminal design reduces visible wiring at the contact point, which is preferred in finished interior environments. Typical applications include commercial entry doors, interior access control points, and perimeter door monitoring on wood-frame door assemblies. The white finish suits installations where the hardware must match standard painted wood trim.

Key Features

• Hidden terminal design keeps wiring concealed at the contact for a clean finished appearance
• Surface-mount installation on wood doors and frames without requiring mortising
• White finish blends with painted wood door frames and trim
• Commercial-grade construction suitable for access control and perimeter security systems
• Sold as individual unit for single-point replacement or new installation

Compatibility

Designed as an OEM-style surface contact for commercial wood door and frame security system installations where hidden terminal wiring and a white finish are required.

Installation Notes

Installation is typically performed by a licensed alarm or low-voltage security technician. Disconnect or power down the security control panel circuit before wiring the contact. Surface contacts on wood frames are typically fastened with wood screws, and terminal wiring should be routed cleanly through the door frame to keep leads concealed per the hidden terminal design. Follow all applicable local low-voltage wiring codes during installation.