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Mfg #: System Sensor
4 Wire Photoelectric Low-Flow Duct Smoke Detector
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Air Duct Velocity
100 to 4000 ft/min (0.5 to 20.32 m/sec)
Alarm Auxiliary Contacts (DPDT)
10A @ 30 VDC (resistive); 10A @ 250 VAC (resistive); ½ HP @ 240 VAC ; ¼ HP @ 120 VAC
Alarm initiation contacts (SPST)
2.0A @ 30 VDC (resistive)
Item ID
2545623000
Mfg #
System Sensor
Operating Temperature
-4° to 158°F (-20° to 70°C)
Power Supply Voltage
20-29 VDC, 24 VAC 50-60 Hz, 120 VAC 50-60 Hz
Product
Duct Smoke Detector
Product Specific
Model D4120
Rectangular Dimensions ( L x W x D)
14.38" x 5" x 2.5"
Square Dimensions ( L x W x D)
7.75" x 9" x 2.5"
Storage Temperature Range
-22° to 158°F (-30° to 70°C)
Supervisory Contacts (SPDT)
2.0A @ 30 VDC (resistive); 2.0A @ 125 VAC (resistive)
Unit of Measure
EA
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