Relay-activate any NO/NC device through your TrolMaster Hydro-X or Aqua-X controller.
The TrolMaster DSD-1 Dry Contact Station is a universal relay module that brings devices requiring normally open or normally closed contact closure — lighting contactors, light dep curtains, pump contactors, CO2 systems, and more — under centralized Hydro-X or Aqua-X control. Ships with a complete RJ12 cable set for plug-and-play integration into your existing TrolMaster device line.
The TrolMaster DSD-1 is a dry contact relay station designed to extend the TrolMaster Hydro-X and Aqua-X ecosystem to devices that are activated by dry contact or relay closure rather than a standard switched outlet. In a commercial facility, a significant portion of mission-critical equipment — lighting contactors, blackout curtain motors, irrigation pump contactors, CO2 generators, temperature and humidity equipment — is wired for dry contact activation. The DSD-1 provides the physical interface that bridges those devices to the TrolMaster control platform.
The module draws operating power from a standard NEMA 120V 15/20A outlet and then passes control voltage — up to 240V at 10A — through its common, normally open, and normally closed contacts to whatever load is wired downstream. This voltage flexibility means the DSD-1 is not limited to 120V equipment; it accommodates the higher-voltage contactors common in production-scale grow rooms without requiring a separate interface relay.
Because it presents both normally open and normally closed contact configurations, the DSD-1 works with virtually any device that requires a contact closure to operate. Documented use cases include: lighting contactors (for HID or high-current LED circuits), light deprivation curtain motors, pump contactors for fertigation and irrigation systems, CO2 generation equipment, dehumidifier and humidity control devices, and other temperature-management peripherals.
The DSD-1 is configurable to mirror the behavior of TrolMaster's other device station modules — DST, DSH, DSC — meaning it can be assigned to any device category already supported within the Hydro-X or Aqua-X software. If your facility runs equipment that doesn't fall into a standard station type, the DSD-1 provides a flexible assignment path. Operators building out multi-room or phased facilities often use the DSD-1 as a catch-all interface for non-standard equipment rather than leaving that gear outside automated control.
The DSD-1 includes an onboard LCD display for status monitoring and local configuration — useful during commissioning when you need to confirm the module is receiving commands from the controller without pulling out a phone or laptop. Wiring and setup are plug-and-play: the module connects directly into the Hydro-X 'devices' line via the included RJ12 cables, so no additional wiring harnesses or adapters are required for standard installations.
A manual override is built in: holding the top button on the unit forces the relay ON or OFF regardless of the controller's programmed state. This is a practical feature for maintenance windows and equipment troubleshooting — you can confirm downstream device operation without interrupting the controller's automation schedule or modifying programming. For facilities with strict compliance or audit requirements, local override capability with an LCD confirmation state is a meaningful operational safeguard.
Licensed cannabis and hemp operators running TrolMaster Hydro-X or Aqua-X as their primary environmental controller will encounter the DSD-1 as a necessary component any time they bring in equipment that doesn't connect through a standard device station. It is the integration bridge between the TrolMaster automation layer and the broader facility infrastructure — particularly relevant in post-harvest or preservation environments where drying room conditions, humidity equipment, and airflow management often involve contactor-based loads.
In multi-station builds, a single Hydro-X controller can support multiple DSD-1 modules simultaneously, each assigned to a different device type or control function. This makes the DSD-1 a scalable component: start with one for a specific need and add more as the facility's equipment list grows. The included RJ12 T-splitter facilitates daisy-chaining along the devices line without additional hardware. For operators standardizing on the TrolMaster platform across rooms or buildings, maintaining a supply of DSD-1 units simplifies future expansion planning.
| SKU | DSD-1 |
| Input Voltage | 100–240VAC, 50/60Hz |
| Output Voltage | 100–240VAC, 50/60Hz |
| Output Current (Max) | 10A |
| Contact Types | Normally Open (NO) & Normally Closed (NC) |
| Operating Temperature Range | 32–122°F (0–50°C) |
| Operating Humidity (Max) | ≤90% RH |
| Controller Compatibility | TrolMaster Hydro-X, Aqua-X, Carbon-X |
| Connection Interface | RJ12 device line |
| Included Cable Set | 1× 16ft RJ12 cable, 1× 4ft RJ12 cable, 1× RJ12 T-splitter |
| Packaging Dimensions | 85mm × 80mm × 90mm |
The DST, DSH, and DSC stations are each pre-configured for specific device categories (temperature, humidity, CO2 respectively) and typically switch a standard AC load directly. The DSD-1 differs in that it uses a dry contact relay output — meaning it signals through volt-free contacts rather than switching mains power directly through the unit. This makes it the right choice for devices that require a contact closure signal to activate their own internal control circuit, such as large lighting contactors, motor starters, or pump control panels. The DSD-1 is also assignable to any device category in the Hydro-X software, giving it a broader functional range.
Yes. While the DSD-1 itself draws operating power from a standard 120V NEMA outlet, its contact terminals can pass control voltage up to 240VAC at 10A. This covers most contactor coil voltages found in commercial grow room electrical infrastructure.
The Hydro-X devices line supports multiple stations simultaneously, and the DSD-1 can be daisy-chained using the included RJ12 T-splitter. The exact number of supported devices depends on your specific Hydro-X configuration and firmware. TrolMaster's documentation and support team can confirm per-system limits for your build.
The DSD-1 is compatible with the TrolMaster Hydro-X, Aqua-X, and Carbon-X platforms. All three use the same RJ12 device line architecture, so the DSD-1 integrates into any of them using the same cable set included in the box.
The DSD-1's on-unit LCD will reflect the current state (ON/OFF) during a manual override, but event logging for override actions is handled at the controller level by the Hydro-X or Aqua-X firmware, not the DSD-1 itself. Check your controller's data logging settings if override tracking is required for compliance purposes.
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