1. introduction: Fan Input Voltage: 12V DCHeaterInput Voltage:220V Power: 250W/100WSize: 90*60*42mmIncludes mounting holes Mounting hole size:4mmHeat material: PTC Thermistor Heat methods: heatradiation by air flow Lead wire: high temperature line The length of lead wires : 200mmThe length of bare wires : 10mm Surface insulate: No Use: this PTC part is used for heating air or solid. the PTC meterial has a characteristic that it is constant temperature on the surface. Notice: the power is reference value. the better the dissipation is, the bigger the power is.In different working environments, power will have a plus or minus 20% tolerance.If you have strict requirements on power accuracy,this product is not suitable for you. 2. advantage:SafetyHeat up quickly, long service life.self-control temperaturesmall sound3.application: EquipmentElectric HeaterGeneral electric appliance Air curtain machine PTC Insulative corrugated heater(PTC Air heater insulator,PTC Heater for warm air-conditioner) is a kind of large power Non-Surface-Electrified PTC heater with wind blowing.PTC element is fixed in aluminium tube and keep insulated with the aluminium tube.