GRI PB-2020-B 3/8" Diameter Plunger Switch, 10W, 200VDC, 0.50A, Closed Loop, N/O, A, Brown

Secure windows and access points with a compact, reliable plunger switch built for modern security and monitoring applications. The George Risk Industries PB-2020-B plunger switch places a 3/8 in adjustable screw plunger into the smallest housing available, making it ideal for vinyl-extruded or custom window profiles where space is limited. Designed for low-voltage security systems, this closed-loop N/O sensor is rated 10W at 200VDC and 0.50A, offering dependable performance for intrusion detection, access control, and surveillance integrations.

Installers benefit from the pre-wired 12 in 22AWG leads or the option of a terminal block, plus single-drill-hole mounting that speeds field fit and reduces labor. The adjustable plunger allows fine-tuning to prevent nuisance triggers while maintaining rapid activation when needed. Made in the US and backed by a lifetime warranty, the PB-2020-B delivers long-term reliability for residential and commercial alarm panels and monitoring systems.

Add the GRI PB-2020-B plunger switch to your next window or access control project—order now or contact us for volume pricing and integration support.

• Fits tight vinyl and custom window profiles with a compact 3/8 in plunger for discreet perimeter monitoring.
• Adjustable screw plunger provides precise actuation to minimize false alarms and adapt to varying frame tolerances.
• Pre-wired 12 in 22AWG leads or optional terminal block reduce installation time for technicians and integrators.
• Closed-loop N/O contact rated 10W, 200VDC, 0.50A delivers reliable low-voltage performance for alarm and access systems.
• Single-drill-hole mounting and brown finish simplify retrofits and OEM installations for a professional appearance.
• Lifetime warranty and US manufacturing ensure long-term reliability for commercial security deployments.