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 high security, and surface insulation. With mounting hole, easy installation Application: air conditioner, electric heater, instrument, general appliance, air curtain machine, humidifier 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 high security, and surface insulation. With mounting hole, easy installation The lead material adopts high temperature resistance wire, safe compatible with use Application: air conditioner, electric heater, instrument, general appliance, air curtain machine, humidifier Made of high quality material, with long serving life Specifications: Heat material: PTC Voltage: 220V( no need toDistinguish positive or negative pole) Power: 600W Lead material: high temperature resistant wire Hole pitch: 104*68mm/4.1*2.7in Installation hole: 8*4mm Size:125*77*26mm/4.9*3*1in(with ripple length of 80mm) Weight: Approx.201g/7.1oz Package list: 1 x Ceramic Air Heater Note: with 160 degrees normally closed temperature control protector, the heater can not be dry burning Package List