System Sensor R-10T Single SPDT Relay with Tamper

System Sensor R-10T Single SPDT Relay with Tamper

Overview

The System Sensor R-10T is a single-pole, double-throw (SPDT) relay module designed for integration with fire alarm control panels and security automation systems. This relay provides dedicated switching control with integrated tamper detection to ensure system integrity in mission-critical fire safety and security installations. The R-10T delivers reliable electrical switching for door strikes, solenoids, strobes, and auxiliary devices, making it a cornerstone component in multi-door access and notification control architectures.

Key Features

• Single SPDT Relay Configuration: Provides one Form C relay contact for flexible switching between normally open and normally closed states
• Integrated Tamper Detection: Built-in tamper switch monitors physical access to the relay module, alerting the control panel to unauthorized interference
• Fire Alarm Panel Compatibility: Designed for direct connection to standard fire alarm control panels and intelligent relay modules
• Auxiliary Device Control: Suitable for switching low-voltage circuits controlling door strikes, magnetic locks, solenoids, alarm strobes, and notification appliances
• Compact Form Factor: Integrated module design minimizes panel real estate while maintaining full switching capacity
• Field-Installable: Straightforward terminal connections support rapid installation and commissioning in retrofit and new construction applications

Integration & Compatibility

The R-10T relay module integrates seamlessly with System Sensor fire alarm panels and third-party control systems that support standard relay modules. It operates on the same voltage rails as the host panel, eliminating the need for external power supplies. The single SPDT contact can be configured for energize-to-unlock or energize-to-lock door strike control, solenoid actuation for hazmat storage systems, or notification device sequencing in complex alarm response scenarios. Installation requires basic panel wiring knowledge and adherence to local fire code requirements for relay supervision and circuit integrity testing.

Application Scenarios

Security integrators deploy the R-10T in multi-door access systems where individual door control relays must be monitored independently, in high-security facilities requiring tamper supervision of all switching devices, and in hybrid fire/security installations where a single panel manages both life safety and access control. The integrated tamper feature prevents unauthorized relay bypass, a critical requirement in insurance-backed and code-compliant installations.

Karl Wilson

During the planning phase of a recent large-scale fire safety renovation, we specified the System Sensor R-10T as the relay switching backbone for twelve individually monitored door strikes and a networked strobe notification system. The built-in tamper detection proved essential when a contractor accidentally opened the panel door during phase two installation—the R-10T flagged the disturbance immediately, preventing silent system degradation that might otherwise have gone unnoticed until final inspection.

Technical Highlights:

• Tamper Supervision: Continuous monitoring of module integrity prevents unauthorized circuit modification or device removal
• Form C Contact Flexibility: Single SPDT relay accommodates both energize-to-unlock and energize-to-lock strike configurations within the same control panel

Deployment Considerations:

• Verify host panel relay module socket compatibility before ordering; not all fire alarm panels accept the R-10T form factor
• Test tamper circuit supervision during final system walkthrough to confirm panel annunciation of tamper events
• When controlling higher-amperage devices (large door strikes, multiple solenoids), confirm relay contact rating against device inrush current specifications

The R-10T is a straightforward, dependable switching component that eliminates the need for external relay modules in smaller installations. Its tamper feature alone justifies specification in any code-compliant project where relay integrity matters.