GRI 40RS-12-W 3/8" Miniature Recessed Switch Set, Standard Gap 1/2"+, Open/Closed Loop, SPDT, Reed Form C, 5W, White

Ideal for discreet door and window monitoring in both residential and commercial security systems, the George Risk Industries GRI 40RS-12-W recessed magnetic contact provides reliable perimeter protection without compromising aesthetics. This miniature recessed switch set uses a SPDT Reed (Form C) configuration and a built-in resistor to support supervised (EOL) wiring and seamless alarm-panel integration. With a 0.75" standard gap and compact 3/8" diameter, it offers consistent activation on typical doors and windows while remaining concealed when installed. The 12" leads simplify wiring during new installs or retrofits and the 5W power rating ensures stable operation within DC low-voltage systems. Constructed from durable steel and finished in white for a clean look, this magnetic contact is optimized for security, surveillance and access-control applications where reliability and discrete mounting matter. Backed by George Risk Industries' lifetime limited warranty, it reduces long-term maintenance and downtime. Upgrade your monitoring and intrusion detection setup with the GRI 40RS-12-W — order now for dependable, low-profile protection in alarm, access control and surveillance systems.

• Discreet recessed design for unobtrusive door and window monitoring — ideal for residential and commercial security installations
• Built-in resistor simplifies supervised (EOL) wiring and improves alarm panel compatibility
• SPDT Reed Form C contacts support both open and closed loop monitoring for flexible system integration
• Reliable operation across a 0.75" standard gap, reducing false alarms and ensuring consistent contact activation
• Compact 3/8" diameter with 12" leads for fast, low-profile installation in frames and sashes
• Durable steel construction with a lifetime limited warranty delivers long-term performance and lower maintenance costs