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NOTIFIER

2D51 Duct Smoke Detector

2D51 duct smoke detectors are low-profile photoelectric detectors designed for special applications, specifically for use in no-flow or low-flow air-handling systems (0 to 4,000 FPM).

2D51 duct smoke detectors are low-profile photoelectric detectors designed for special applications, specifically for use in no-flow or low-flow air-handling systems (0 to 4,000 fpm). Pendant or plenum mounted 2D51 detectors are intended to be installed into B210LP bases and wired to a D4P120 power board only control units. D4P120 power boards are capable of controlling up to two 2D51 sensors. Pendant mounted in a standard electrical boxes within ducts, the twist-in/twist-out heads allows easy removal from bases for quick cleaning and maintenance. 2D51 heads can be locally tested using a magnet or by using the test/reset pushbutton on the D4P120 power board.

Features & Benefits:
  • Low standby current
  • Two LEDs blink in standby
  • Field sensitivity metering of detector to meet the requirements of NFPA 72 with the use of RTS2/RTS2-AOS and SENS-RDR
  • Designed for mounting on a standard electrical box
  • SEMS screws for easy wiring and positive wire retention
  • Removable cover and insect screen for field cleaning
  • Remote push button test/reset, LEDs provide visual indications
  • Onboard supervisory and alarm relays
  • Accepts 24 or 120V supply voltage
  • Interconnect up to 100 units for common functions
Certifications:
  • UL Listed
  • FM Approved
  • CSFM

Others

  • Maximum Alarm Current
    • 4 milliampere
  • Conventional or Addressable
    • Conventional
  • Detection Sensor Type
    • Photoelectric
  • Maximum Operating Humidity
    • 95 Percentage
  • Minimum Operating Humidity
    • 10 Percentage

Others

  • Maximum Alarm Current
    • 4 milliampere
  • Conventional or Addressable
    • Conventional
  • Detection Sensor Type
    • Photoelectric
  • Maximum Operating Humidity
    • 95 Percentage
  • Minimum Operating Humidity
    • 10 Percentage
  • Maximum Alarm Current : 4 milliampere
  • Conventional or Addressable : Conventional
  • Detection Sensor Type : Photoelectric
  • Maximum Operating Humidity : 95 Percentage
  • Minimum Operating Humidity : 10 Percentage