PTC heater, self controlling heater, long life, easy to assemble. Configuration. ... of uses.Heating water for shower, ducking bath, footbath, washing hand, vegetable and dish. PTC water heater for drink warmer ... in appliance.PTC as a heating element, it fits for high safety, slap-up product.For getting higher power, let water ... voltage twice or decrease of 1/2, for the same PTC heater.