- Connecting dry contact into GST addressable system
- Loop powered
- Selectable input type N/O (default) or N/C by programmer
- Coding by handhold programmer P-9910
- Surface mount
FMM-1 is a standard-sized module (typically mounts to a 4" [10.16 cm] square box) that supervises either a Class A (Style D) or Class B (Style B) circuit of dry-contact input devices.