Features: 【Material】 Adopts heat-resistant silicone wire as leading wire, red wire for "+" and black wire for "-". 【Safty】With insulator on surface which makes it's safe to use, high reliability. 【Convenient】Heat up quickly, long service life. With mounting holes, easy to install. 【Energy Saving】When the heater increases the environmental temperature, the power will reduce gradually within certain ranges. 【Application】 Suitable for heater, humidifier, air conditioning and other commonly used appliances. Specifications: Condition: 100% Brand New Color: Black Optional Type: #1 Rated Voltage: 12V Rated Power: 150W (15A) #2 Rated Voltage: 24V Rated Power: 150W (10A) #3 Rated Voltage: 24V Rated Power: 250W (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. 160g Quantity: 1pc Package Included: 1 x PTC Heater 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. 4. The heater's black bracket insulation is high temperature resistant, but the metal part is conductive. Please pay attention to safety when using. 5. The heater's fan life span is 3~5 years, 20000 ~30000 hours. 6. The 【Material】 Adopts heat-resistant silicone wire as leading wire, red wire for "+" and black wire for "-". 【Safty】With insulator on surface which makes it's safe to use, high reliability. 【Convenient】Heat up quickly, long service life. With mounting holes, easy to install. 【Energy Saving】When the heater increases the environmental temperature, the power will reduce gradually within certain ranges. 【Application】 Suitable for heater, humidifier, air conditioning and other commonly used appliances.