Wire parameters: Temperature Tolerance Range: -40~105Rated for 300V Durable Material: Oxygen-free copper cableFour Conductors with EPDM Insulation (Black, White, Red, & Green) Easy to Use: Can Be Cut to Size to Match Installation Requirements,Flexible and durable for wiring projects! Wide range of uses: This Wires 14 specification 4-core control cable is an excellent solution to connect small split outdoor units and indoor units, or to extend the connection between them, making it very suitable for use with small split air conditioners and heat pumps. It can also be used as an air conditioning part Wires are a waterproof and freeze-proof copper wire solution with good flexibility and corrosion resistance, UL tested for long-term durability.