Features [Safety Protection] Equipped with DC high voltage lightning arrester and 15A , providing short circuit, no voltage, and overcurrent protection for the circuit, avoiding damage to the solar panel and inverter, preventing malfunctions. [Reliable Materials] The 4 string PV combiner box is made of PC flame retardant and ABS, which is long lasting, waterproof, more suitable for outdoor installation. IP65 waterproof rating can effectively prevent adverse weather and ensure good protection. [Easy to Install] The photovoltaic box is equipped with pre wired cables, ground wires, plug and play, and installation clips, which can quickly fix the box to any regular surface, perfectly saving a lot of time. [Transparent Cover] You can check the status of the main switch and lightning arrester through transparent cover. Green indicates normal, once it turns red, it indicates a lightning strike and the lightning protection module needs to be replaced in a timely manner. [Widely Applicable] Suitable for various photovoltaic grid connected and off grid power generation systems, compatible with any brand of solar panels and solar connectors. Spec: Item Type: Solar Combiner Box Material: PC Flame Retardant, ABS Input: 2 Strings Output: 2 Strings Protection Grade: IP65 Impact Resistance: IK10 Cable Input Port: PG 2.5-6mm², Solar Connector 2.5-6mm² Output Cable Voltage Cap: PG 2.5-6mm², Solar Connector 2.5-6mm² DC Protector: Maximum Discharge Current: 40KA DC Socket: : 10x38mm 15A How to Use: Use according to the wiring diagram introduction. packing list: 1 x Solar Combiner Box 4 x Male Plugs 4 x Female Plugs 2 x Waterproof Connectors 8 x Cores 4 x Screws 4 x Anchors 1 x Solar Special Wrench 1 x Instruction Manual Package List 1 x Solar Combiner Box 4 x Male Plugs 4 x Female Plugs 2 x Waterproof Connectors 8 x Cores 4 x Screws 4 x Anchors 1 x Solar Special Wrench 1 x Instruction Manual