... , and have CE,VDE certification, fulfill RoSH. 1)We supply WY-F capillary type adjustable thermostat for electric water heater, electric ... oven, electric boiler, electric fryer and other electric heater use.2) The material of capillary can be copper or stainless steel ... ).Life time: more than 100,000 times8).CE, VDE, Rohs, WY-F capillary type electric Water heater Thermostat