System Sensor

14 19/50 in. 4-Wire Photoelectric Smoke Detection

Part #SD4120  |  Manufacturer Part #D4120


14-19/50 in
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Product Details

  • 14.38" L x 5" W x 2.5" D
  • 20 29 VDC, 24 VAC, 120 VAC
  • Photoelectric, integrated low-flow technology
  • Versatile mounting options: square or rectangular configuration
  • One easy-access Test/Reset button and improved LED status
  • Plug-in sensor offers superb false alarm immunity and the latest sensor technology
  • Patented sampling tube installs from front or back of the detector with no tools required


Length: 14-19/50 in

Type: SD4120

UL Listed: Yes