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.
The SpectrAlert Advance P4WK is a white, four-wire, outdoor horn strobe with selectable strobe settings of 15, 15/75, 30, 75, 95, 110 and 115 cd. Outdoor back box included.
The SpectrAlert Advance MP120K mounting plate is designed to use 120 VAC to power SpectrAlert Advance horns, strobes, horn frasl strobes, chimes and chime frasl strobes.