TrolMaster Hydro-X Humidistat Station 24V

The TrolMaster Hydro-X Humidistat Station 24V — model HS-1 — is a 24V interface station designed to give your Hydro-X environmental controller authority over commercial dehumidifiers. It connects to the dehumidifier’s low-volt control terminals and signals exactly like a wired external humidistat, keeping high-amperage inrush current out of your controller and its wiring entirely.

TrolMaster Hydro-X Humidistat Station 24V Specifications

The HS-1 is a low-voltage humidistat station in the TrolMaster Hydro-X accessory ecosystem. Specifications below are derived from the canonical product data and product title.

Why Choose the TrolMaster Hydro-X Humidistat Station 24V

Most commercial dehumidifiers in the 50–200 pint range include a low-volt control port intended for an external humidistat. The HS-1 takes advantage of that port to hand off dehumidifier scheduling to the Hydro-X controller — which can then run it on sensor-driven setpoints, VPD targets, or time-based programs.

• Keeps high-amperage current away from your controller. Commercial dehumidifiers draw heavy inrush current at startup. The HS-1 routes the switching signal through the dehumidifier’s own low-volt terminal rather than cycling the compressor load through relay contacts in the Hydro-X base unit, reducing wear on controller hardware.
• Wired exactly like a standard external humidistat. Electricians and growers already familiar with humidistat wiring will find the HS-1 connects the same way. No proprietary adapter harnesses or conversion cables are needed.
• Extends Hydro-X humidity management to commercial-scale equipment. Smaller dehumidifiers can often be switched directly through a plug-in power strip controller, but larger commercial units require a low-volt signal path. The HS-1 provides that path within the Hydro-X ecosystem.
• Part of the modular Hydro-X station architecture. TrolMaster designed the Hydro-X system around accessory stations — the HS-1 slots into that architecture without requiring a separate control hub or additional programming interfaces.

Best Uses for the TrolMaster Hydro-X Humidistat Station 24V

The HS-1 is purpose-built for growers running a Hydro-X controller alongside commercial-grade dehumidification equipment. It is not a standalone humidity sensor or a general-purpose relay — it is specifically the interface layer between the Hydro-X and a dehumidifier’s low-volt control port.

• Commercial indoor grow rooms with large dehumidifiers. Facilities running commercial dehumidifiers in the 70–200+ pint range typically cannot connect them directly to standard relay outputs. The HS-1 bridges that gap.
• Multi-zone humidity control under a single Hydro-X controller. When a grow facility uses multiple dehumidifiers across zones, each unit with a low-volt port can receive its own HS-1 station for independent zone management.
• Replacing aging standalone humidistats. Operations currently running dedicated wall-mount humidistats to control dehumidifiers can replace those with the HS-1 and gain the scheduling, logging, and integration features of the Hydro-X platform.
• Facilities prioritizing electrical safety and component longevity. By keeping high-amperage switching within the dehumidifier’s own circuitry, the HS-1 reduces the risk of relay burnout and simplifies electrical load planning in the control panel.

Compatibility

The HS-1 is designed for use with the TrolMaster Hydro-X environmental controller system. On the dehumidifier side, it requires a unit that includes a low-volt external humidistat control option — a feature common on most larger commercial dehumidifiers but not universal across all residential or light-commercial units. Check your dehumidifier’s wiring diagram or spec sheet to confirm a low-volt humidistat terminal is present before purchasing.

The 24V control voltage is the HS-1’s operating signal level and matches the Hydro-X station bus. If your dehumidifier’s low-volt port specifies a different control voltage, confirm compatibility with TrolMaster before wiring.

Growers managing broader humidity conditions in their environment — including intake air moisture and condensation management — may also find value in a condensate pump to handle drainage from commercial dehumidifiers running on extended cycles. For environments where temperature and humidity interact closely, pairing the Hydro-X system with a two-way humidity management solution in storage areas can complement active dehumidification during off-cycle periods.

Sources & Further Reading