Apollo Orbis Marine A1R Heat Detector (ORB-HT-41001-MAR)

The Apollo Orbis Marine A1R Heat Detector (ORB-HT-41001-MAR) provides reliable heat detection for marine environments where smoke detectors may not be suitable. Using a single thermistor, it monitors the surrounding air temperature and responds to both fixed temperature levels and rapid increases in temperature, helping provide early warning of developing fires.

Designed for marine fire alarm systems, the ORB-HT-41001-MAR performs well in environments where dust, smoke, steam, or airborne contaminants are present during normal operation. By responding to heat rather than smoke particles, it helps reduce false alarms while keeping reliable fire detection.

Its modern low-profile design, wide operating temperature range, and high humidity tolerance make it fitting for challenging marine environments.

Key Features

• Marine A1R rate-of-rise heat detector
• Single thermistor heat sensing technology
• Responds to rapid temperature increases
• Suitable where smoke detectors are less fitting
• Ideal for dusty or smoky environments
• Modern, low-profile design
• High humidity tolerance up to 98% RH
• Wide operating temperature range
• Optional flashing LED version available
• Reliable heat detection for marine applications

Typical Applications

The Apollo ORB-HT-41001-MAR is fitting for:

• Marine vessels
• Offshore installations
• Dusty environments
• Machinery spaces
• Storage areas
• Service rooms
• Utility areas
• Locations where smoke detection may cause false alarms