The SpectrAlert Advance WTP is a red weatherproof mounting plate for flush mounting outdoor K series speakers and speaker strobes. Especially for use with SpectrAlert Advance replacement outdoor model
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.