1 male to 4 female and 1 female to 4 male connectors allow 4 solar panels to be connected in parallel, increasing power output. This product is CE and TUV certified Package Includes: 2 pairs of solar Y branch parallel connectors, 1 wrench, 8 male solar panel connectors, 8 female solar panel connectors, 8 male copper silver-plated pins, 8 female copper silver-plated pins, and 1 spanner. A total of 36 pieces The solar panel connectors cable is made of tin-plated conductive copper material, offering superior conductivity, thermal conductivity, weather resistance, chemical resistance, and flame-retardant properties compared to other common materials. The extra-thick insulation withstands extreme temperatures from -40℉ to 194℉ (-40℃ to 90℃). Designed for extreme weather conditions This solar panel connectors cable's main lines meet TUV 2PFG 1169 standards, and the branch lines meet EN 50618:2014 standards for photovoltaic applications. It can be used in a variety of environments to ensure circuit safety. Cross-sectional area: main lines 6mm², branch lines 4mm²; test voltage: 6000V; rated voltage: DC 1000V; conductor resistance: (20°C) ≤ 5.09Ω/KM; weather resistance: UV; rated current: 30A; waterproof level: IP67 Easy to install: Simply press the two sides of the built-in lock on the male connector with your fingers to easily connect and disconnect. It will not slip off easily. This connector is compatible with most conventional solar connectors.The solar branch connector and solar panel connectors use a double sealing ring, providing water and dust resistance. Service life: 25 years The 1 to 4 Y-Branch design is great for connecting multiple panels in parallel, allowing you to connect four solar panels to one power source. This kit is ideal for both DIY enthusiasts and professionals looking to optimize their solar installations. Suitable for household, small-scale, and industrial photovoltaic systems, as well as camper and RV solar setups.