Purchase Qty. Reference FOB Price
500-999 Pieces US$2.45
1,000+ Pieces US$1.90
Product Description
1. Thermocouple and magnetic valve composegas safety protection devices, thermocouple is a transducercan provide the power, magnetic valve is a controller., 2. When thermocouple tips is heated by fire, cold and heat generate thermoelectric power due to temperature difference, to form closed loop ...