Quantity(1) Notifier FMM-4-20 Analog Input Module Fire Alarm Control Panel 4-20mA. The FMM-4-20 4-20mA Analog Input Module is intended for use in intelligent, two-wire systems, where the individual address of each module is selected using the built-in rotary switches. This module allows intelligent panels to interface and monitor two-wire or three-wire sensors, that produce a […]