Projected Beam Detector

The Hochiki SPC-24 Projected Beam Smoke Detector consists of an emitter and receiver. The SPC-24 detector should be placed so that smoke generated by a fire will likely rise into the path of the beam.
The receiver is constantly monitoring and measuring the intensity of the beam transmitted by the emitter. Should the smoke from a fire cause a decrease in the signal strength of a magnitude that exceeds the programmed obscuration setting, an alarm signal is generated.

Product code : SPC-24


Main features: 

  • Microprocessor-based for reliability
  • Simple setup and alignment with signal strength LEDs
  • Provides 60 feet on center linear protection at a range of 32.8 feet to 328 feet
  • Automatic compensation for signal drift or dirty lens
  • Three field adjustable sensitivity settings
  • Ordering code: ACC-EN – Ivory / ACC-EN(WHT) – White / ACC-EN(BLK) – Black
  • Operating Voltage: 17 – 41 VDC
  • Low Power Mode: 120 μA (typ.)
  • Quiescent Current: 400 A μA (typ.)
  • Alarm Current (controlled by CIE): 9.1 mA (excluding remote indicator)

Click on the links below to download the following attachments:

SPC-24 Data Sheet.pdf