J&V Thermocouple ODS Hypoxia Protector 750mV

Working principle: Use thermocouple components to generate thermoelectric potential on the temperature of the open flame to drive the electric valve. When the space where the burning appliance is lacking oxygen (oxygen content <17%-19%), the temperature of the small flame of the open flame is lower than about 400℃. At this time, the electric potential provided by the thermocouple is not enough to maintain the open state of the gas valve, thereby cutting off the gas source and ensuring personal safety.