GRI M-500-B Micro 500 Series Surface Mount Magnetic Contact Switch Set for Residential Applications, Brown

Protect homes with unobtrusive, reliable intrusion detection using the George Risk Industries GRI M-500-B Micro 500 Series surface-mount magnetic contact. Designed for residential security and monitoring, this compact door/window sensor offers a low-profile brown finish that blends with wood frames while keeping critical entry points supervised. The set ships with the manufacturer part number 4400A W/5.6K and includes a 5.6K end-of-line resistor for easy integration with most alarm panels and supervised circuits. Its micro surface-mount format reduces installation time and eliminates the need for recessed fittings, making it ideal for retrofits and new residential builds. Built in the US for consistent quality, the M-500-B supports dependable performance for alarm, surveillance, and access monitoring applications. Specify the GRI M-500-B for discreet, panel-ready door and window protection—order today for your next residential security installation or retrofit.

• Discreet, low-profile surface-mount design blends into residential doors and frames for unobtrusive security
• Micro 500 Series compact size simplifies installation in tight locations and behind trim for clean aesthetics
• Built-in 5.6K end-of-line (EOL) resistor (4400A W/5.6K) enables supervised alarm panel integration for reliable monitoring
• Brown finish matches wood tones in homes, reducing visibility to intruders while maintaining curb appeal
• Durable US-made construction from George Risk Industries ensures consistent performance and long service life