The TrolMaster DSH-1 Humidity control/device modules allow the user to easily connect and control standard humidifying or dehumidifying devices to the Hydro-x. This module allows control of any humidifying or dehumidifying device under the world voltage standard (100-240 VAC, 50/60 Hz), up to 10-amps. *Use with dehumidifiers less than 7 amps to avoid current overload.