This sensor is temperature proportion type. The sensor part sense the temperature, and the liquid will expands or contracts by the temperature change. It can operate the main shaft stem in the sensor pocket and it will make a valve open/close by this function. This item usually used to Temperature Regulating Valve.
AHS-BT : This type is that the temperature control part is on the sensor part and only use liquid. Standard type.
AHS-BV : It is possible to set temperature on the valve and it can free to sue based on location of sensing system establishment. It is liquid only.
AHS-CT : It is possible to set temperature on the valve and it react sensitive, only use air.
AHS-CV : It is possible to set temperature on the valve, it can do accuracy set temperature because of dual sensor therefore it can cover the temperature change, only use air. Usually it used on place of wide temperature change.