Renogy Solar Y Branch Connectors MMF+FFM Pair, 1 Year Warranty Renogy Solar Branch Connectors are used for parallel wiring solar panels (PV modules) Sold as a pair, these Y-Connectors will maintain the voltage of the solar panel configuration to match the battery size These connectors are solely compatible with solar connectors and come with one male (MMF) and one female (FFM) connector Use these Solar Branch Connectors to make tight, waterproof connections Features: Hard plastic One FFM and one MMF