Apollo Orbis I.S. A1S Heat Detector with Flashing LED (ORB-HT-51158-APO)

The Apollo Orbis I.S. A1S Heat Detector with Flashing LED (ORB-HT-51158-APO) provides reliable heat detection for hazardous environments where smoke detectors may not be suitable. The detector monitors temperature using a single thermistor network that produces a voltage output proportional to the surrounding air temperature, allowing it to accurately detect heat made by fire conditions.

Designed for use in intrinsically safe fire alarm systems, the ORB-HT-51158-APO performs well in environments where dust, smoke, steam, or airborne contaminants are part of normal day-to-day operations. By responding to temperature changes rather than smoke particles, the detector helps reduce unwanted alarms while keeping reliable fire detection.

The integrated flashing LED provides clear visual status indication, while advanced Orbis technology helps improve detection reliability and reduce false alarms in demanding industrial and hazardous locations.

Key Features

• Intrinsically safe A1S heat detector
• Integrated flashing LED
• Single thermistor heat sensing technology
• Suitable where smoke detectors are unsuitable
• Ideal for dusty or smoky environments
• Reduced false alarm incidence
• Increased detection reliability
• Designed for hazardous areas
• Reliable operation in harsh environments
• Compatible with Apollo Orbis intrinsically safe systems

Typical Applications

The Apollo ORB-HT-51158-APO is suitable for:

• Hazardous areas
• Offshore platforms
• Refineries
• Dusty environments
• Process plants
• Industrial facilities
• Small to medium sized buildings
• Areas where smoke detection may cause unwanted alarms