The System Sensor PR-1 is a multi-voltage SPDT control relay. It accepts 24VDC, 24VAC, or 115VAC on its coil input. As a result, one part covers most common interface voltages.
The PR-1 functions as an interface between a fire alarm contact and an external load. In addition, the multi-voltage coil simplifies retrofits where the trigger voltage may vary.
How the PR-1 Is Used
A low-voltage trigger energizes the coil. Then the SPDT contacts transfer to drive the external load. Specifically, the PR-1 is rated for 10A switching at standard control voltages.
Typical applications include HVAC shutdown, door release, and elevator recall interface. However, verify that the inrush and steady-state load current stay within the 10A contact rating.
Key Features
- Multi-voltage coil: 24VDC, 24VAC, or 115VAC
- SPDT switching contacts
- 10A contact rating
- System Sensor enclosed relay package
Specifications
- Manufacturer: System Sensor
- Part number: PR-1
- Coil voltage: 24VDC / 24VAC / 115VAC
- Contact configuration: SPDT
- Contact rating: 10A
Order the System Sensor PR-1
Life Safety Consultants stocks the PR-1 relay. To confirm coil and load specs for your install, call 1-888-557-0558. Alternatively, email sales@lifesafetycom.com.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 0.5 lbs |
|---|---|
| Dimensions | 4 × 4 × 1 in |
| Condition | New |
| Manufacturers | System Sensor |
| Part Type | Sensor |







