TrolMaster Hydro X RJ12 to 3pin IP67

The TrolMaster ECS-3 is a converter cable kit that bridges the RJ12 output of a TrolMaster Hydro-X controller to the 5/8" threaded waterproof (3-pin IP67) connectors used on select Fluence LED fixtures. The kit ships ready to install, including a 16 ft RJ12 cable, a T-splitter for daisy-chaining, and a 4 ft RJ12-to-IP67 adapter cable.

ECS-3 Specifications

Specification	Value
Brand	TrolMaster
Model / SKU	ECS-3
Connector Type	3-pin IP67 Threaded Waterproof (5/8" diameter)
Interface Cable	RJ12
RJ12 Cable Length	16 ft (included)
Adapter Cable Length	4 ft RJ12 / Threaded Waterproof Connector
Includes T-Splitter	Yes
Weight	0.45 lb
Compatible Controller	TrolMaster Hydro-X (Hydro-X Pro / Aqua-X series)
Compatible Fixtures	Fluence LED fixtures with 5/8" Threaded Waterproof Connectors

Why Choose the TrolMaster ECS-3

The ECS-3 solves a specific wiring problem that comes up when pairing TrolMaster Hydro-X controllers with Fluence LED fixtures. Fluence uses a 5/8" diameter threaded waterproof connector (3-pin IP67 rated) on some of its light models — a different interface from the standard RJ12 daisy-chain that TrolMaster uses for most dimming devices. Without an adapter like the ECS-3, there is no direct path to bring those fixtures under Hydro-X automated control.

The kit is purpose-built for this use case. Everything you need to make the connection comes in the box: a 16 ft RJ12 run cable for reaching from the controller or a nearby node, a T-splitter so you can branch to more than one device without occupying an additional controller port, and a 4 ft adapter cable with the IP67 waterproof connector already terminated at one end. No field crimping, no sourcing individual connectors separately.

The IP67 rating on the connector itself means it can tolerate incidental water exposure — relevant in greenhouse and commercial indoor environments where irrigation and humidity keep surfaces wet. The threaded lock on the connector also resists accidental disconnection better than a friction-fit plug, which matters in facilities where cable runs may be disturbed during maintenance.

Best Uses for the TrolMaster ECS-3

• Integrating Fluence LED fixtures into Hydro-X automation: The ECS-3 is the correct adapter when you need the Hydro-X to schedule or dim Fluence lights that terminate in a 5/8" threaded waterproof connector rather than a standard RJ12 jack.
• Commercial and greenhouse grows with multiple light zones: The included T-splitter lets you branch the signal line so that two fixtures can be controlled from a single controller node, reducing the number of occupied ports on the Hydro-X unit.
• Wet or high-humidity environments: The IP67-rated waterproof connector is appropriate for spaces where condensation, irrigation misting, or overhead watering could expose cable terminations to moisture.
• Extending existing ECS cable runs: The 16 ft RJ12 cable can be used alongside other TrolMaster ECS accessories to reach fixtures positioned further from the controller head.
• Replacement or spare cabling: If an existing ECS-3 cable is damaged or lost, this kit restores function without requiring a full controller replacement or specialty ordering from the manufacturer.

If your grow room also uses water quality monitoring equipment, the Apera Grostar EC calibration kit and a reliable reverse osmosis water system are useful components to have integrated into the same environment where you are running automated lighting controls.

Compatibility

The ECS-3 is designed to work within the TrolMaster Hydro-X ecosystem. On the controller side, it connects via standard RJ12 — the same interface used across TrolMaster’s other ECS (External Control Station) accessories. On the fixture side, it terminates in a 3-pin IP67 connector with a 5/8" threaded collar, matching the connector format found on certain Fluence LED fixture models.

Not all Fluence fixtures use this connector format. Before purchasing, confirm that your specific Fluence model uses a 5/8" diameter threaded waterproof connector for dimming or control input. Fluence fixture models using a different connector type (such as a standard 0-10V flying lead or a different pin count) will require a different adapter.

The T-splitter included in the kit allows the RJ12 signal to be split to two cable runs from a single port, which is consistent with how TrolMaster’s other ECS splitter accessories work. Check TrolMaster’s Hydro-X documentation to confirm the maximum number of devices on a single port before chaining multiple splitters.

Sources & Further Reading