You're looking at a Fire Control Instruments Air Duct Smoke Detector, DH-22. BUYER MUST PAY SHIPPING. Shipping can be calculated through checkout before you pay.
DUCT SMOKE DETECTOR (SL2000-N )INSTALLATION INSTRUCTIONS : HAS LED ALARM INDICATION ON SENSOR HEAD : TEMPERATURE RATING 32 DEG. F TO 158 DEG F. : TEST PORT VALVE AND MAGNET TEST CAPABILITY : 4- WIRE CONVENTIONAL .
System Sensor Innovair Flex 4 Wire Duct Smoke Detector Model D4120 NIB The D4120 Duct Smoke Detector consists of the D4S Sensor Component And the D4P120 Power Board Component.
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