GRI TSC-20-24 Tamper Switch Closed Loop with Clamp and 24" Wire Leads

Protect doors and windows with a compact, professional-grade tamper sensor designed for commercial security systems. The George Risk Industries TSC-20-24 plunger tamper switch pairs a low-profile 3/8" housing with an adjustable plunger (1/4"-1/2") to provide precise, reliable tamper detection where larger switches won’t fit. This closed-loop, normally-open reed switch includes standard 24" pre-wired leads for fast, hassle-free integration with alarm panels, access control and surveillance monitoring equipment.

Built from flexible nylon with a stainless steel spring and hermetically sealed contacts, the TSC-20-24 resists expansion, contraction and corrosion to ensure long service life and consistent performance. UL and ULC approvals plus a lifetime warranty reduce maintenance risk and help control lifecycle costs for installations in retail, healthcare, education and multi-tenant buildings. The oval flange and optional box tamper bracket make mounting secure and straightforward.

Ideal for wired security and tamper supervision of doors and windows, the GRI TSC-20-24 delivers dependable monitoring for professional installations—order now or contact our team for bulk pricing and integration support.

• Compact 3/8" diameter fits tight door and window frames for discreet tamper detection.
• Pre-wired 24" leads speed installation and simplify integration with alarm panels and access control.
• Hermetically sealed reed contact and UL/ULC approval deliver reliable, low-maintenance security monitoring.
• Adjustable plunger (1/4"-1/2") adapts to varying gaps for precise sensing and fewer false alarms.
• Durable nylon body and stainless steel spring reduce downtime and lower total cost of ownership with a lifetime warranty.