Potter PAD 100-TRTI Two Relay Two Input Module

The Potter PAD 100-TRTI (P/N 3992701) is an addressable two relay, two input module for Potter fire alarm systems. It provides two programmable relay outputs and two supervised input circuits on a single addressable SLC device — making it one of the most versatile interface modules in the Potter PAD addressable fire alarm system lineup. The inputs can monitor devices such as waterflow switches, tamper switches, or manual pull stations, while the relay outputs can be configured for functions including door holder release, elevator recall, or HVAC shutdown.

The PAD 100-TRTI communicates via the Potter addressable fire alarm slc loop, allowing the fire alarm control panel to identify and control the module by its unique address. This addressable architecture means every input alarm and relay activation is logged with precise location data — a major advantage over conventional fire alarm signalling systems where a zone-level signal gives no indication of which specific device triggered the event.

For fire alarm equipment supplies contractors designing integrated building systems, the PAD 100-TRTI is the go-to module for locations that require both monitoring of existing field devices and control of building systems. It is a staple item on the fire alarm parts suppliers inventory for commercial Potter addressable system installations, capable of serving diverse roles across a single system — from supervising a sprinkler tamper switch to triggering an HVAC fire damper fusible link release.

SLC Address Assignment

Assign a unique SLC address to the PAD 100-TRTI before installation. Each module must have a distinct address on the fire alarm slc loop — duplicate addresses cause communication errors that can prevent the module from reporting correctly to the fire alarm control panel. Document all address assignments in the fire alarm inspection and test records for AHJ review during commissioning.

Input and Relay Programming

Program each input zone and relay output at the fire alarm control panel per the system design drawings. The two input circuits can be assigned to different alarm zones or supervisory functions, and the relays can be mapped to specific alarm conditions. Verify all input triggers and relay activations during system commissioning testing to confirm the correct building system integrations are active.

Annual Testing

Test both supervised inputs and both relay outputs annually per NFPA 72. Activate each input device — such as a waterflow switch or manual pull station — and verify the correct relay output activates. Test relay activation of connected building systems such as HVAC shutdown and fire dampers fusible link release. Update fire alarm inspection stickers and test records after each successful annual test.

Can the PAD 100-TRTI monitor a fire suppression system pull station?

Yes. The supervised input circuits are compatible with fire suppression pull station devices and other normally-open contact initiating devices. This makes the PAD 100-TRTI suitable for integrating fire suppression system pull stations into the addressable fire alarm slc loop for centralized monitoring and event logging.

What is the difference between PAD 100-TRTI and PAD-100OROI?

The PAD 100-TRTI provides two relay outputs and two input circuits. The PAD-100OROI (3992702) provides one relay output and one input circuit. Choose the TRTI for locations where multiple device monitoring and multiple control outputs are needed from a single SLC address. Choose the OROI for simpler single-device monitoring and single-output control applications.

Can relays be used to control fire suppression releasing circuits?

The relay contacts are rated for general control applications. For fire suppression system releasing circuit applications, verify the relay contact rating meets the current requirements of the releasing device and confirm the configuration is UL listed for the intended application with your Potter system designer before installation.