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: 30A -Rated voltage: DC1000V - Flame retardant level: UL94-V0 - Ambient temperature: -40℃~+90℃. p> 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, low temperature resistant, high strength, impact resistance, flame retardant. The plugs and sockets have a stable self-locking system and can be easily plug in and remove. Quick and easy assembly and easy removal of plugs without the need for additional tools.