Compatible: A pair of MC-4 T-branch cable connectors, 1 piece 1 male to 3 female (M/3F) and 1 piece 1 female to 3 male (F/3M), suitable for all Photonic Universe solar panels and most other solar panels. Technical specifications: Rated current: 50A - Rated voltage: DC1000V - Flame retardant level: UL94-V0 - Ambient temperature: -40℃ ~ +90℃. High-strength insulating waterproof silicone ring, IP67 waterproof, dustproof and UV resistant, TUV approved cable. The housing is made of high-strength PPO plastic, durable, radiation resistant, durable at low temperatures, high strength, impact resistance, flame retardant. The male and female connectors have a stable self-locking system and are easy to insert and remove. Quick and easy installation and easy removal of the plugs without the need for additional tools. Specification: Condition: 100% new Working current: 50A Voltage: DC1000V Contact resistance: 0.35 mΩ Cable outer diameter range: 3 mm - 7.5 mm Ambient temperature: - 40 ℃ ~ +135 ℃