Potter PAD 100-SIM Single Input Module

The Potter PAD 100-SIM (P/N 3992704) is an addressable single input module for Potter fire alarm systems. It provides one supervised input circuit on a single SLC address for monitoring a single contact-type initiating device — such as a waterflow switch, tamper switch, fire suppression pull station, or any other normally-open contact device used in commercial fire alarm systems. The module reports the device status directly to the fire alarm control panel via the fire alarm slc loop, providing individual point identification for every alarm and supervisory event.

The PAD 100-SIM is the most straightforward interface module in the Potter PAD addressable series — one device, one input, one SLC address. It is the right choice for isolated field devices that need to be brought onto an addressable fire alarm signalling network without the additional input or output capacity of larger modules. The compact design mounts inside or adjacent to the field device for clean, code-compliant wiring in tight mechanical rooms or above-ceiling locations.

For fire alarm parts suppliers and commercial fire alarm equipment supplies contractors, the PAD 100-SIM is a high-volume stocking item. Most commercial fire alarm systems require dozens of single-input monitoring points — smoke detector ac circuits, waterflow switch connections, and fire suppression pull station monitoring positions — making the PAD 100-SIM one of the most frequently specified addressable modules in the Potter PAD system family.

Assign a unique SLC address before installation. Wire the supervised input to the monitored contact device using Class B wiring with an end-of-line resistor per the Potter panel specification. Mount the module adjacent to the monitored device for clean, short wiring runs. After installation, verify the input triggers the correct alarm or supervisory zone at the fire alarm control panel. Annual testing of the input circuit is required per NFPA 72 — activate the monitored device and confirm correct panel response. Document in the fire alarm inspection and test records and update fire alarm inspection stickers after each test cycle.

When should I use PAD 100-SIM vs PAD 100-DIM?

Use the PAD 100-SIM when only one device needs to be monitored at a location. Use the PAD 100-DIM (3992703) when two nearby devices both need to be brought onto the SLC loop and you want to conserve SLC addresses by monitoring both on one module. For most isolated field devices, the PAD 100-SIM is the correct and most cost-effective choice.

Can the PAD 100-SIM monitor a nac fire alarm circuit?

No. The PAD 100-SIM is an input monitoring module only — it monitors the state of a contact device and reports to the panel. Notification appliance circuit (NAC) expansion requires a dedicated NAC output module such as the PAD100-NAC. Do not use input modules for NAC applications.