Handa HD brand Waterproof AC Connector M20 Female Socket Panel Connector to Male Plug Cable Connectors, 2pins, 3pins, 4pins and 5pins 4 types by tailored choice, 3pins is suitable for PV Solar inverter's(2-4KW) AC Off-grid/Backup/EPS port, while 2/4/5 pins for AC LED Lighting Equipment.