RELAY MODULE 4WIRE SMOKES

DSC RM-1 | Power Supervision Relay for 4-wire Smokes

This is a four-wire power supervision relay from DSC for four-wire smoke detectors. You will install this at the end of the four-wire smoke detector's power loop and whenever there is a break in the detector power circuit or a loss of power de-energizes the power supervision relay, opening the contacts and causing a trouble annunciation at the fire alarm control unit.