The Det-Tronics part number 028259-001 corresponds to the X3301A4N15W2, a model from the X3301 Series Multispectrum Infrared (MIR) Flame Detectors. Here's a full breakdown:

Product Overview: X3301A4N15W2

• Detection Type: Multispectrum Infrared (MIR) flame detection using three IR sensors
• Field of View: Wide-angle coverage with fast response time
• Material: Typically aluminum housing
• Explosion-Proof Rating: Certified for use in Division and Zone hazardous areas

 Key Features

• False Alarm Immunity: Highly resistant to sunlight, lightning, hot objects, and arc welding
• Output Options:
  • Fire, fault, and auxiliary relays
  • Isolated 0–20 mA output
  • Optional HART communication
• Optical Integrity (OI): Built-in automatic and manual testing to ensure sensor health
• Status LED: Tri-color LED for local indication of normal, alarm, or fault conditions
• SIL Rating: SIL 2 compliant for high-integrity safety systems

 Industrial Applications

• Oil & gas facilities
• Chemical processing plants
• Aerospace and defense installations
• Power generation sites