Sentinel Heat Sensors work in conjunction with the Master Control to protect the engine from abnormally high coolant, transmission oil or crankcase oil temperature. Model H and Model HA Heat Sensors are mechanical dump-type units, normally closed. Temperature actuation settings of 180o to 260oF (82oF to 127oC) can be specified as required for engine coolant and lubricating oil, transmissions, driven compressors, and more.
Note: The heat sensor must be monitoring moving fluid