Temco 1 QTY MC4 30A Solar Panel Connector Pairs Male Female Set PV Cable Wire Lifetime warranty. Don't choose a product that will degrade or fail before your panels do. HIGH UV Resistance. Won't degrade in sunlight. Ultra-Low Contact Resistance. Unique spring membrane contact surface in terminal. Waterproof. O-Ring connector and cable gland provide IP67 rating. Silver-plated Copper Terminals outlast and outperform tin-plated models.