Fire Alarm

Tamper Switch|Supervisory Switch

★★★★★ 4.8 (236 Review) SKU: FGT-CSY-2026 Stock Available

Product Type: Fire Protection Valve
Brand: Shield
Model: SD-SVS OSY-1
Origin: UK
Certification: UL Listed & FM Approved
Function: Monitors fire sprinkler valve positions
Waterproof: NEMA 4X* (IP 65) and 6P (IP 67) Enclosure is 4X.
Temperature: - -40ºC to 60ºC
Compliant: RoHS compliant.

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System Monitoring with Reliable Tamper Supervisory Switch


The Tamper Supervisory Switch is a critical monitoring device used in automatic fire sprinkler and fire protection systems to supervise the open position of control valves. The early notification helps ensure the sprinkler system remains ready to operate when a fire emergency occurs.


A Supervisory Switch is not intended to detect fire. Instead, it continuously monitors the status of sprinkler control valves, helping facility managers identify conditions that could reduce the effectiveness of the fire suppression system. Supervisory switches are commonly installed on sprinkler control valves in accordance with fire protection system design and applicable standards.



Specifications:


Product Type: Fire Protection Valve

Brand: Shield

Model: SD-SVS OSY-1

Origin: UK

Certification: UL Listed & FM Approved

Function: Monitors fire sprinkler valve positions

Waterproof: NEMA 4X* (IP 65) and 6P (IP 67) *Enclosure is 4X.

Temperature: - -40ºC to 60ºC

Switch Indicators: Visual

Conduit entrances: Two

Length Trip Rod: Adjustable

Position: Three.

Bracket: Knurled mounting prevents slipping.

Feature: Easy installation.

Compliant: RoHS compliant.





Features of Tamper Supervisory Switch


  1. High-quality Tamper Supervisory Switch for fire sprinkler monitoring.
  2. Designed for OS&Y valves.
  3. Provides continuous valve position supervision.
  4. Sends a supervisory signal to compatible fire alarm control panels.
  5. Rugged industrial-grade enclosure for dependable operation.
  6. Weather-resistant models available for indoor and outdoor applications.
  7. Adjustable mounting for easy installation.
  8. Reliable SPDT dry contact output for system integration.
  9. Durable construction for long service life.



Benefits of Tamper Supervisory Switch


  1. Helps ensure sprinkler control valves remain in the correct operating position.
  2. Provides early warning if a valve is partially or fully closed.
  3. Supports continuous readiness of the fire suppression system.
  4. Reduces the risk of unnoticed sprinkler system impairment.
  5. Improves maintenance efficiency through automatic supervision.
  6. Easy Integrate control panel.
  7. Enhances overall building fire protection.
  8. Offers dependable long-term performance with minimal maintenance.



Advantages of Tamper Supervisory Switch


  1. Continuous monitoring of critical sprinkler control valves.
  2. Reliable supervisory signaling for rapid maintenance response.
  3. Strong and durable construction for demanding environments.
  4. Easy installation on supported valve types.
  5. Suitable for installations.
  6. Compatible with modern building fire safety systems.
  7. Helps improve operational confidence in sprinkler installations.
  8. Designed for professional fire protection applications.



Applications of Tamper Supervisory Switch


The Tamper Supervisory Switch is Highly used in:

  1. Commercial Office Buildings
  2. Industrial Factories
  3. Garment & Textile Industries
  4. Hospitals & Healthcare Facilities
  5. Hotels & Hospitality Buildings
  6. Shopping Malls & Retail Centers
  7. Warehouses & Distribution Centers
  8. Educational Institutions
  9. Data Centers & Electrical Facilities
  10. Airports, Public Buildings & Government Facilities



Why Choose Our Tamper Supervisory Switch?


  1. Accurate and dependable valve position monitoring.
  2. Compatible with leading fire alarm and sprinkler systems.
  3. Heavy-duty construction for long-term reliability.
  4. Easy installation on supported valve assemblies.
  5. Reliable supervisory signaling through SPDT dry contacts.
  6. Helps maintain the readiness and reliability of your fire protection system.



Conclusion


The Tamper Supervisory Switch is an essential component of any professionally designed automatic fire sprinkler system. With durable construction, reliable performance, and seamless integration into modern fire protection systems, this Supervisory Switch provides building owners and facility managers with greater confidence in the safety and readiness of their fire protection infrastructure.






Size Any
Model Any
Origin USA or China
Warranty As per policy
A Tamper Supervisory Switch is a monitoring device used in automatic fire sprinkler systems to supervise the position of sprinkler control valves. If a valve is moved from its normal operating position, the switch sends a supervisory signal to the fire alarm control panel for prompt attention.
A Tamper Switch monitors the open position of sprinkler control valves and detects unauthorized or accidental valve movement.
A Tamper Supervisory Switch is mechanically connected to a sprinkler control valve, such as an OS&Y gate valve or butterfly valve. When the valve is turned toward the closed position beyond a preset point, the switch changes its contact status and transmits a supervisory signal to the compatible fire alarm control panel.
In fire protection systems, the terms Tamper Switch and Supervisory Switch are often used interchangeably. Both devices supervise the position of sprinkler control valves and generate a supervisory condition rather than a fire alarm when valve status changes.
This Switch normally opens (NO) or normally closed (NC). Many models provide SPDT (Single Pole Double Throw) contacts, allowing installers to use either NO or NC wiring as required by the system design.
No. A Tamper Supervisory Switch does not detect smoke, heat, or flames. Its function is to supervise the operational status of sprinkler control valves and report valve movement that could affect the performance of the fire suppression system.

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