The Tyco 851PH (516.850.055) is a Marine Addressable Optical Smoke And Heat Multi-Sensor Detector for Tyco MX/MZX fire detection systems. It combines photoelectric smoke sensing with heat detection to identify a broad range of fires, from smouldering to flaming fires, and includes a built-in line isolator.
Features
- Combined optical smoke and heat detection in one detector.
- Detects a wide range of fires, including smouldering and flaming fires.
- Addressable digital communication with compatible MX fire alarm controllers.
- Built-in short-circuit line isolator helps maintain loop integrity.
- Multiple approved detection modes and sensitivities can be selected according to environmental conditions.
- Extended drift compensation helps maintain stable detection performance.
- Fire, isolate and fault LED indications provide clear status information.
- Supports two-way infrared communication with the 850EMT Engineering Management Tool.
- Designed specifically for marine applications and approved for vessel use.
- SIL2 certified, according to available product documentation.
Typical Applications
- Marine fire detection systems
- Shipboard fire alarm systems
- Engine-room and machinery spaces
- Accommodation areas and corridors
- Control rooms and technical spaces
- Offshore vessels and installations
- Marine equipment and electrical rooms
- Tyco MX/MZX addressable fire detection systems




