1: Input Voltage:110VAC and DC are either available. Surface Temperature:230°C±10% Dimension:100 x 21 x 5mm Heating Material: PTC thermistor Heating Methods: Heat conduction Lead Wires: High temperature twine Surface Insulation: YES Using: This PTC is used to warmth air or solids, must not be put into liquids. It has the attribute of continuous temperature. 2: -Quick reaction -10s instantaneous heating -Long life,up to 10,000 hours 3: The heating temperature is stricken by these factors. -How large is the casing? -The insulation of the distance -Ambient temperature We have our personal factory and model you're a wholesaler,please be happy to touch with us, we are able to provide you with customized centers and extra discounts.