Product Description 1.Application: Defrosting or air heating for electric vehicles. 2.Characteristics: Self-regulation PTC element heater is safe and will not be damaged without air flow Thermostat will cut off the power if the unusual condition leads to overheating Multiple INSULATIONS, electric strength is up to 2500VDC Excellent low temperature start performance, it can quickly start heating under -40C Voltage can be designed by client request