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Remote indicator and test panel with key-switch enabled test mode for duct and beam detectors

Sampling Tubes for Duct Detectors

Conventional duct housing with 2151 detector, no relay, no tube

4-Wire Photoelectric + Relay Duct Smoke Detector (stand-alone only)

Waterproof 4-Wire Photoelectric Duct Smoke Detector. Fitted with auxiliary relay with two form C (change-over) contacts.