... could be consist of aluminum, brass, ceramic, stainless steel.Some samples of uses.Heating water for shower, ducking bath, footbath, washing ... Notice in appliance.PTC as a heating element, it fits for high safety, slap-up product.For getting higher power, let water ... \en\ptc4.html Other types of PTC heating element, please visit our website marked in the picture. PTC heating element for water faucet