GRI PB-2020-T-W 3/8" Diameter Plunger Switch with Terminals, 10W, 200VDC, 0.50A, Closed Loop, N/O, A, White

Secure narrow window and door frames with the George Risk Industries PB-2020-T-W plunger switch — a compact, press-to-fit plunger switch engineered for reliable closed-loop monitoring in security and surveillance systems. Its 3/8" diameter housing fits single-drill installations and extruded vinyl frames where space is limited, while the normally-open (N/O) closed-loop contact supports dependable intrusion detection. Rated for 10W at 200VDC and 0.50A, the PB-2020-T-W handles low-voltage alarm circuits with screw terminals or standard 12" 22AWG leads for fast integration into access control and alarm panels. The adjustable screw plunger lets installers fine-tune actuation to reduce false alarms, and the white finish blends discreetly with residential or commercial windows. Made in the US and backed by a lifetime warranty, this George Risk plunger switch delivers long-term reliability for door and window monitoring, supervisory loops, or remote surveillance contacts. Ideal for security integrators and facility managers who need a small-profile, dependable sensor — specify the PB-2020-T-W for your next perimeter protection or monitoring project.

• Ultra-compact 3/8" diameter plunger fits narrow vinyl and custom frames for discreet perimeter protection
• Closed-loop N/O contact provides reliable security monitoring and seamless integration with alarm and access control systems
• Press-to-fit, single-drill installation with 12" 22AWG leads or screw terminals speeds up on-site installs
• Adjustable screw plunger reduces false alarms by allowing precise actuation calibration
• US-made durability with a lifetime warranty for long-term, low-maintenance surveillance and monitoring deployments