Manufacturer Name: Honeywell Product Number: FMM-101 OEM Part Number: FMM-101 The Honeywell FMM-101 Mini Monitor Module is a compact, addressable module designed for use in fire alarm and security systems. It allows monitoring of a single, normally open contact, such as a pull station, water flow switch, or other compatible device, by reporting its status to the control panel. https://www.partshnc.com/fmm-101-honeywell-mini-monitor-module