GRI TSC-20 Tamper Switch, Closed Loop
SKU
TSC-20
Model No
TSC-20
$95.52
GRI TSC-20 Tamper Switch, Closed Loop is available to buy in increments of 10
Product Highlights
- Recessed adjustable plunger from 1/4″ to 1/2″
- 3/8″ diameter (Smallest in the industry!)
- Easy to install
- Replaces old mechanical tampers
- Strong spring action

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The GRI TSC-20 Tamper Switch is designed for superior performance in tampering detection, featuring a compact 3/8” diameter perfect for doors and windows where space is limited. This adjustable plunger switch incorporates durable materials and a user-friendly design, ensuring easy installation and longevity in various applications. With its innovative features, including a strong spring action and sealed contacts, this tamper switch provides a reliable solution to enhance security systems.
GRI TSC-20 Tamper Switch Features
- Recessed adjustable plunger: Enables fine-tuning from 1/4” to 1/2” for precise activation.
- 3/8” diameter: The smallest in the industry, ideal for tight spaces.
- Easy installation: Simplifies setup for quick deployment.
- Replacement for old mechanical tampers: Provides a modern solution to outdated technology.
- Strong spring action: Ensures reliable performance and durability.
- Press to fit: User-friendly design for secure positioning.
- 12” #22 AWG leads: Offers ample length for versatile connections.
- Screw down flange: TS-20 design allows for positive retention, enhancing stability.
- Extended lead options: Longer leads or custom cables available to suit installation needs.
- Hermetically sealed: Protects internal components from environmental conditions.
- Plated contacts: Resist sticking or freezing for consistent function.
- Travel specifications: Total travel distance .250; pre-travel is .105 ± .035 for precision.
- Mounting hardware included: Everything you need for quick installation is provided.
- Supervisory loops: Available upon request for enhanced system monitoring.
GRI TSC-20 Tamper Switch Specifications
| Feature | Details |
| Diameter | 3/8” |
| Plunger Adjustment | 1/4” to 1/2” |
| Lead Length | 12” #22 AWG |
| Travel Distance | Total: .250; Pre-travel: .105 ± .035 |
| Material | Nylon with stainless steel spring |
| Sealing | Hermetically sealed |
| Flange Type | Screw down flange on TS-20 |
| Custom Options | Longer leads or jacketed cable |
| Environmental Resistance | Plated contacts prevent sticking/freezing |
| Mounting Hardware | Included |
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