Specifications:Condition: 100% Brand NewColor: BlackOptional Type:#1 Rated Voltage: 12V Rated Power: 180W (15A) #2 Rated Voltage: 24V Rated Power: 180W (10A) #3 Rated Voltage: 24V Rated Power: 300W (15A)Mounting Hole Distance: approx. 87mm / 3.4"Mounting Hole Diameter: approx. 4mm / 0.16"Product Size: approx. 60 x 60 x 42mm / 2.4" x 2.4" x 1.7"Environment Temperature Range: -5~65℃Package Weight: approx. 160gQuantity: 1pcPackage Included:1 x PTC HeaterNote:Please note that the new type and old type of 12V product will be sent randomly, and make sure you will not mind before ordering.Please note that the number of the fan blade will be sent randomly, and make sure you will not mind before ordering.PTC Air heater with fan series product instructions:1. When bare wire extend from the heater,the positive and negative electrode are not distinguished. Please input the rated voltage and the sufficient current.2. When bare wire extend from the fan,the red is positive electrode and the black is negative electrode. Please input the rated voltage and the sufficient current.3. The heater can be used in extremely humid air environment. It doesn't matter if a small amount of water droplets are splashed on the surface of the heater, but they can't be immersed in liquid.