240V temperature control relay module for the TrolMaster Hydro-X system — plug-and-play, cable set included.
The TrolMaster DST-2 is a 240V temperature device station purpose-built for the Hydro-X control ecosystem. Connect and automate any 240V heating or cooling device rated at 10A or less — mini-splits, electric heaters, supplemental cooling units — directly through your Hydro-X controller.
The TrolMaster DST-2 is a dedicated 240V temperature control relay station designed to integrate heating and cooling devices into the Hydro-X environmental control platform. It functions as a switched relay module: your Hydro-X controller reads temperature from its sensor network and instructs the DST-2 to energize or de-energize the connected load based on programmed setpoints and schedules.
The module handles any resistive or inductive 240V load rated at or below 10 amps — electric space heaters, mini-split signal relays, evaporative coolers, fan coil units, and similar equipment. For 120V devices, TrolMaster offers the DST-1 variant; the DST-2 is specifically engineered for 240V circuits common in commercial facilities running high-draw HVAC equipment.
Licensed cannabis and hemp cultivation facilities running TrolMaster's Hydro-X platform need a reliable relay solution for the 240V HVAC equipment that handles the bulk of climate work in a commercial flower or veg room. The DST-2 fills that gap — it is the module that closes the loop between controller logic and the actual heating or cooling hardware.
It is equally relevant to operators spec'ing new builds and those retrofitting legacy rooms into a Hydro-X network. Any facility where temperature precision directly impacts cannabinoid expression, terpene retention, or VPD targeting will benefit from having each climate device under software-controlled automation rather than manual thermostats.
Setup follows a straightforward plug-and-play workflow: connect the module to a 240V outlet via its 3-prong attaching plug, plug the controlled device into the module's output, then run the included RJ12 cable back to the Hydro-X controller or daisy-chain via the included T-splitter. Press the addressing button to link the module, and it is immediately available for programming in the Hydro-X interface.
The onboard LED gives real-time status at a glance without opening an app. Fast-blinking green indicates the module is not yet addressed or has lost connection to the controller. Slow-blinking green means the module is linked and connected but the output is currently off. Solid green means the output is actively on. Blinking red signals an overload condition — power-cycling the module resets it. A manual override button on the unit lets operators toggle the connected device on or off directly without controller input, useful for quick diagnostics or emergency operation.
In a multi-zone Hydro-X deployment, operators typically run one DST-2 per 240V temperature device — one for the supplemental heater, one for a mini-split relay, and so on. The RJ12 T-splitter included in the kit allows multiple device stations to share a single cable run back to the controller port, keeping cable management practical in a dense rack or ceiling-mount scenario.
The DST-2 does not replace a dedicated HVAC controller or a variable-frequency drive; it is a relay station that turns a device fully on or off based on Hydro-X logic. For facilities dialing in tight VPD windows where temperature swings of even 1–2°F affect outcomes, the value is in the automation layer — scheduled setbacks, day/night differentials, and alarm-based overrides — all managed through the same interface governing CO2, lighting, and irrigation.
| SKU | DST-2 |
| Input Voltage | 240 VAC, 50/60 Hz |
| Output Voltage | 240 VAC, 50/60 Hz |
| Max Output Current | 10A |
| Working Temperature Range | 32–122 °F (0–50 °C) |
| Max Operating Humidity | ≤ 90% RH (non-condensing) |
| Unit Dimensions | 3.3" L × 3.2" W × 3.5" H (85 × 80 × 90 mm) |
| Gross Weight (per pack) | 0.34 kg (12.48 oz) |
| Connection Interface | RJ12 cable socket |
| In the Box | 1× DST-2 Device Station, 1× 16 ft RJ12 cable, 1× 4 ft RJ12 cable, 1× RJ12 T-splitter |
The DST-2 is designed for use with TrolMaster's Hydro-X control system. It connects via RJ12 cable and must be addressed to a compatible Hydro-X controller (such as the HCS-1 or HCS-2) to operate under automation. It cannot function as a standalone thermostat.
It depends on how the HVAC unit accepts a control signal. The DST-2 is a relay that switches a 240V circuit on or off at up to 10A. It works with equipment designed to accept a dry-contact or switched-power signal at 240V and 10A or less. For variable-speed or inverter-driven equipment, verify the unit's control input specifications before connecting.
The DST-1 is TrolMaster's temperature device station for 120V (100–240V universal) applications, while the DST-2 is specifically designated for 240V circuits. Both share the same 10A output current rating and RJ12 Hydro-X integration. Choose the DST-2 when your heating or cooling device runs on a dedicated 240V circuit.
TrolMaster's Hydro-X architecture supports multiple device stations per controller, linked via RJ12 daisy-chain using the included T-splitters. The practical limit depends on the specific Hydro-X controller model and available device station ports. Consult the controller's documentation or contact HSC for system-design guidance.
Yes — the DST-2 single pack includes one 16 ft RJ12 cable, one 4 ft RJ12 cable, and one RJ12 T-splitter. For longer runs, standard RJ12 extension cables can be used; TrolMaster specifies that cable runs should remain within practical lengths to maintain signal integrity across the network.
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