Notifier FMM-4-20 Analog Input ModuleThe Notifier FMM 4 20 is an intelligent addressable analog input module that lets the NFS2 3030 monitor industry standard 4 20 mA sensors such as gas, temperature, and air speed devices. It converts the sensor output into a communication format the panel can interpret, supports both 2 wire and 3 wire sensor configurations, and includes built in short circuit protection for reliable operation.