Advantage: 1. Vacuum welding, excessive performance rectification, nice stability, safe and reliable, small loss, small size, 2. nice warm temperature dissipation with warm temperature sink. 3. Outdoor waterproof, Combiner Box Color: As Shown Material: plastic Products details : Insulation material: PPO Rated voltage: TUV 1000 DC/ UL 2000V DC Test voltage: 6KV(50Hz,1Min) Contact material: Copper, tin plated Contact resistance: Less than zero m ohm Degree of protection : IP67 Pollution Degree: 2 Protection category : Class II Flame calss: UL94-V0 Plug Force: lower than 50N Withdrawal force: more than 50N Ambient temperature range: -40 ~ + 90 Diode: 55A Pin dimention: 4 Package Contents: 1 x Anti-reverse diode module Only the above package content, different products aren't included. Note: Light mirrored image and diversified displays can cause the colour of the thing in the photo a bit various from the real thing. The size allowed error is +/- 1-3cm.