System Sensor PR-1 Multi-Voltage Single Relay Module

System Sensor PR-1 Multi-Voltage Single Relay Module

Overview

The System Sensor PR-1 is a single relay module designed for integration with fire alarm and security systems requiring additional relay switching capacity. The PR-1 delivers flexible voltage support and straightforward relay control, making it a practical choice for system integrators and installers who need to expand switching capability within existing panel architectures.

Key Features

• Single relay output for discrete switching applications
• Multi-voltage support for flexible installation across system types
• Compact form factor suitable for retrofit and new installations
• Designed for compatibility with standard fire alarm and security panels
• Reliable switching performance for auxiliary control circuits
• Cost-effective relay expansion option

Integration & Compatibility

The PR-1 (often searched as PR 1) integrates into existing System Sensor panel ecosystems and compatible third-party systems requiring auxiliary relay modules. Its multi-voltage design eliminates the need for separate SKUs across mixed-voltage installations, streamlining procurement and reducing inventory complexity. The module connects directly to panel relay outputs or supervised circuits, providing switched voltage control for auxiliary devices including door strikes, valve solenoids, strobes, and other 24 VDC-compatible loads.

Typical Applications

Security integrators deploy the PR-1 for:

• Access control door strike activation on alarm trigger
• Auxiliary notification device control
• HVAC or life safety equipment relay switching
• Panel expansion in retrofit fire alarm upgrades
• Multi-zone building automation relay logic

Marty Allison

The System Sensor PR-1 fills a straightforward integration role in fire alarm and security system design. I've specified this module on numerous retrofit projects where legacy panels needed additional relay capacity without full panel replacement. Its multi-voltage flexibility eliminates coordination headaches across mixed-voltage building systems.

Technical Highlights:

• Single Relay Output: Provides one switched contact for auxiliary device control
• Multi-Voltage Design: Supports multiple voltage levels, reducing SKU fragmentation in mixed-system deployments
• Compact Module: Space-efficient design suitable for DIN rail or panel mounting

Deployment Considerations:

• Verify relay output voltage matches downstream load requirements before installation
• Confirm panel compatibility with third-party integrations—consult system documentation for relay interface specifications
• Use supervised circuit outputs when connecting to life safety circuits requiring monitoring
• Test relay switching under full load during commissioning to ensure contact rating adequacy

The PR-1 represents a practical, economical relay expansion solution for integrators managing mixed-vintage System Sensor installations or cross-compatible panel environments. Its straightforward design and multi-voltage capability make it a reliable choice for auxiliary switching needs.