RJ12 to Threaded Waterproof Connector Converter Cable

What the ECS-3 Is

The ECS-3 is part of TrolMaster's ECS (Extension Cable Set) accessory line for the Hydro-X Environmental Control System. The Hydro-X uses a standard RJ12 daisy-chain architecture to link controllers, sensors, and device stations — but some LED fixtures don't terminate in a bare RJ12 port. Instead, they use a 5/8" threaded waterproof connector rated IP67 for moisture and dust resistance. The ECS-3 is the adapter that closes that gap.

The kit ships as three pieces: a 16 ft male-to-male RJ12 cable that runs from the Hydro-X controller, a T-shaped splitter for signal distribution along the chain, and a specialized 4 ft converter cable with an RJ12 plug on one end and the threaded waterproof connector on the other. No soldering, no custom wiring — the kit covers the full run from controller to fixture.

Who Needs This Cable

If you're running TrolMaster Hydro-X (or Hydro-X Plus / Pro) for lighting automation and your LED fixtures use the 5/8" threaded waterproof port rather than a standard RJ12 jack or pigtail lead, this is the correct converter kit. It is specifically designed for Fluence brand LED fixtures that terminate with threaded waterproof connectors.

Operators who already have the Hydro-X ecosystem dialed in for CO2, HVAC, and irrigation control and are adding or swapping fixture lines need to match the cable type to the fixture's physical port — not to the controller. The ECS-3 handles that translation without requiring any modification to existing Hydro-X wiring runs. If your fixture uses a pigtail lead, look at the ECS-2. If it uses an M16 PushLock connector, the ECS-5 is the correct variant. The ECS-3 is specifically for threaded waterproof ports.

Key Features

IP67-rated connector: The 5/8" threaded waterproof termination meets IP67 ingress protection, making it appropriate for the humidity and condensation levels typical of a closed-loop cannabis or hemp cultivation environment.

T-splitter included: The kit's T-shaped splitter allows the RJ12 signal to be distributed along a daisy-chain run, so multiple fixtures or modules can be tied back to the same Hydro-X controller port without additional hardware.

Plug-and-play installation: The ECS-3 requires no tools, soldering, or configuration. Connections follow a defined sequence — 16 ft RJ12 from the controller, T-splitter for signal routing, 4 ft converter cable to the fixture port — and the system communicates immediately once connected. This matters in commercial builds where install time and callback risk need to stay low.

How It Fits a Commercial Build

In a multi-light commercial room running TrolMaster automation, every fixture in the dimming circuit needs a proper physical and electrical connection back to the controller. The Hydro-X's RJ12 daisy-chain backbone is consistent across the ecosystem, but the fixture-side termination varies by manufacturer and product generation. The ECS-3 keeps the Hydro-X backbone intact while adapting to the fixture's native port — no workaround wiring, no signal integrity compromise.

For facilities running Fluence fixtures with threaded waterproof ports alongside TrolMaster environmental controls, the ECS-3 is the catalog-correct solution. One kit per fixture dimming connection. Order quantity should match the number of fixtures being brought under Hydro-X lighting control. Contact HSC to confirm compatibility with your specific fixture model before ordering.