Potter JFS-A2 (Potter P400R model) is an expandable analog/expandable fire firing system The control panel uses the exclusive Potter/Nohmi protocol that includes a full range of sensors and modules. The system is expandable with a total of fifteen additional signal line forming circuits (SLC) each with a maximum of 127 devices. Each SLC can consist of any combination of smoke sensors, heat detectors or modules and allows a total of 50 ohms of impedance and may use any wire compliant with the National Electrical Code (NEC).

The Potter JFS-A2 has a 10-amp power supply with six notification circuits (NAC) and four I/O (I/O) circuits. NACs are rated at 3A each and I/OS is rated at 1A each. Each output is regulated and power limited. In addition, each output is uniquely programmable and can be configured for static signal, strong synchronization, static power, door holder power or release. Powerful sync includes Potter/AMSECO, Gentex, System Sensor, and Cooper/Wheelock, and with exclusive Quadrasync, each output may have a unique brand and all flashes will flash.