Feature 1 Adopts of PTC ceramic heating element and aluminum tube, low thermal resistance, high heat transfer efficiency. 2 This product is a electric heater with automatic constant temperature and energy saving. 3 This PTC ceramic air heater has the characteristic of surface insulation and high security. 4 The device can protect the circuit when the current surges too much and the temperature is too high. 5 Application: air conditioner, electric heater, instrument, general appliance, air curtain machine, humidifier, etc.Features: Adopts of PTC ceramic heating element and aluminum tube, low thermal resistance, high heat transfer efficiency. This product is a electric heater with automatic constant temperature and energy saving. This PTC ceramic air heater has the characteristic of surface insulation and high security. The device can protect the circuit when the current surges too much and the temperature is too high. Application: air conditioner, electric heater, instrument, general appliance, air curtain machine, humidifier, etc. Specification: Material: Aluminum & Plastic Weight: 460g/16.2oz Heating material: PTC thermistor Heating mode: heat through the flow of air Power: 1500W Voltage (Optional): 110V/220V (the bare line is connected, regardless of the positive and negative pole, the rated voltage can be) Mounting hole: 120*145mm/4.7*5.7inch Corrugation Length: 96mm Size: 140*152*26mm/5.5*6*1inch Package List: 1 x PTC Ceramic Air Heater Note: 1.Lead color is random. 2.With 150 degrees normally closed temperature control protector, the heater should not be dry-dried.