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System Sensor D4S
System Sensor D4S
Duct Detector Photoelectric Smoke Sensor Only
Regular price
$176.99
Sale price
$176.99
Regular price
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The System Sensor D4S is an InnovairFlex Series duct smoke detector, a 4-wire photoelectric unit with integrated low-flow technology that fits square, rectangular, and intermediate duct configurations. It monitors airflow inside HVAC ductwork for smoke and shuts down connected fans on alarm, and its plug-in sensor design keeps testing and maintenance straightforward.
Key Features
- 4-wire photoelectric detector with integrated low-flow technology
- Versatile mounting for square or rectangular duct configurations
- Plug-in sensor with enhanced false alarm immunity
- Patented sampling tube installs from the front or back without tools
- Patented interconnect feature for multi-fan shutdown
- Easy-access Test/Reset button with improved LED status indication
Technical Specifications
- Air velocity range: 100 to 4,000 ft/min (0.5 to 20.32 m/s)
- Operating range: -4°F to 158°F, 0-95% RH non-condensing
- Rotary address switches; 3/4-inch conduit knockout for wiring space
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