Thermal silicon wire: uses heat- silicon wires as a lead, red wires "+", and black wires "-". High performance: Safe, stability, energy saving, environmental protection, and long service life are the most significant advantages of PTC products. Normal use of 5,000 to 10,000 hours, the power attenuation is about 15%. (The number of switches is not limited) Widely applicable: suitable for common appliances such as heater, humidifier, air conditioning, etc. Energy saving: The system is energy -saving. When the heater increases the ambient temperature, the power gradually decrease within a certain range. : There are insulators on the , and high reliability. Colour:black Material:plastic Size:60 x 60mm Package Contents: 1 x Fan Heater Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.