Solar Cable coupler,Due to highly robustness,UV-resistance, the touch protection a high graranteed ... for many years, UL approval. Solar Cable coupler,Due to highly robustness,UV-resistance, the touch protection a high graranteed ... 4 mmProtection degree(mated/unmated) IP67/IP2XOperating temperature -40 C to +80 CInsulation material Copper, silver platedLocking system Snap inCross section ...