RJ12 to Threaded Waterproof Connector Converter Cable（ECS-3）
 
The ECS-3 provides a 5/8” diameter connector for some of Fluence brands LED fixtures using Threaded Waterproof  Connectors for interconnecting. Like the other ECS kits, the ECS-3 comes with a 16ft RJ12 cable, a T-splitter and a special 4 ft RJ12 / Threaded Waterproof  Connector cable.