George Risk Industries 100-T-AL Surface Mount Terminal Switch

Product Description

The George Risk Industries 100-T-AL is a surface mount terminal switch designed for use as an alarm contact in security and access control systems. This type of device functions as a magnetic reed switch assembly, making or breaking a circuit when a door, window, or other access point is opened or closed. It installs directly onto the surface of a frame or sash without requiring a mortised pocket, which reduces installation time. Security system installers and low-voltage electricians are the primary trades that work with this component.

Surface mount alarm contacts like the 100-T-AL are commonly used in residential and light commercial intrusion detection systems, fire alarm door monitoring circuits, and access control door status monitoring. The surface-mount form factor makes it suitable for retrofit installations where cutting into a frame is not practical. It is typically wired into a security panel zone input or alarm control circuit.

Key Features

• Surface mount design eliminates the need for mortising or recessing into door frames
• Terminal-style wiring connections for secure field termination
• Alarm contact configuration suitable for integration with standard security panel zone inputs
• Compact form factor for discreet installation on doors, windows, or access panels

Compatibility

Designed as an OEM-style replacement or new-installation surface mount alarm contact for use with standard residential and light commercial security and access control panels that accept normally closed or normally open dry contact zone inputs.

Installation Notes

Installation is typically performed by licensed low-voltage technicians or security system installers in accordance with local codes and NEC Article 725 for low-voltage control and signaling circuits. De-energize the security panel or disconnect the zone circuit before making wiring connections at the terminal block. Ensure the switch and magnet are aligned within the manufacturer-specified gap tolerance for reliable actuation. Avoid routing signal wiring in the same conduit as line-voltage conductors.