GRI 120T-12G 120T Series 3/4" Switch 3/8" Magnet Recessed Switch Set, Standard Gap, 10W, 200VDC, 0.40A, Closed, N/O, A, Gray

For reliable, low-profile door and window protection, the George Risk Industries 120T Series magnetic contact is built for professional security and surveillance installations. This magnetic contact set provides dependable monitoring with a standard 0.75 inch gap and Form A (normally open) reed contact, ensuring consistent performance with most intrusion detection and alarm systems. The 3/4" switch hole accommodates easier wire routing and service access, while the smaller 3/8" magnet allows flexible offset placement in 1"–1.5" thick frames.

Designed specifically for wood and aluminum frames, the 120T-12G simplifies installation for locksmiths, integrators, and facilities managers who demand neat, tamper-resistant installations. It supports low-voltage circuits up to 200 VDC at 0.40 A and can be ordered with end-of-line (EOL) resistors or longer leads for seamless integration into monitored systems. Backed by George Risk Industries' industry reputation and a lifetime limited warranty, this magnetic contact delivers long-term reliability for commercial and residential security projects. Add the GRI 120T Series to your next access control or alarm installation to improve concealment, reduce service time, and strengthen perimeter monitoring.

• Concealed, tamper-resistant mounting keeps the contact out of sight for cleaner installations and improved security integrity.
• 3/4" switch opening eases wiring and serviceability, reducing install time and minimizing on-site labor costs.
• 0.75" standard gap and Form A (N/O) contact deliver reliable intrusion detection compatible with most alarm panels.
• Compact 3/8" magnet and hybrid installation fit wood or aluminum frames, simplifying alignment in thick doors and windows.
• Rated for low-voltage systems (up to 200 VDC, 0.40 A) with optional EOL resistor support for monitored security circuits.