The Det-Tronics part number 027868-001 refers to the X3301 LON Head, Aluminum, Explosion-Proof, SIL-rated flame detector. Here's a detailed breakdown:

 Product Overview: X3301 LON Head (Aluminum, SIL)

• Model: X3301
• Material: Aluminum housing
• Network Interface: LON (Local Operating Network) for system integration
• Explosion-Proof Rating: Certified for hazardous locations
• SIL Rating: Safety Integrity Level 2 — suitable for high-risk industrial environments

 Key Features

• Detection Method: Multi-spectrum infrared (IR) flame detection
• Field of View: Wide-angle coverage with fast response time
• False Alarm Immunity: Designed to resist interference from sunlight, lightning, and hot objects
• Diagnostics: Built-in Optical Integrity (OI) test and event logging
• Output Options: Compatible with Det-Tronics Eagle Quantum Premier fire and gas safety system