D2-AUS Duct Housing
Conventional duct housing with 2151 detector, no relay, no tube
D4120 Duct Detector
4-Wire Photoelectric + Relay Duct Smoke Detector (stand-alone only)
D4120W Weatherproof Duct Detector
Waterproof 4-Wire Photoelectric Duct Smoke Detector. Fitted with auxiliary relay with two form C (change-over) contacts.
RTS151KIT Remote Test Station
Remote indicator and test panel with key-switch enabled test mode for duct and beam detectors
