TrolMaster Humidistat Station (HS-1） grower's choice 720 The powerful ROI-E420 LED grow

The powerful ROI-E420 LED grow light optimizes plant growth at all stages

Thermally optimized non-air cooled aluminum housing does not require a cooling fan

Customized programming allows almost limitless degree of control

coco coir and all types of media

TrolMaster Humidistat Station (HS-1） grower's choice 720 The powerful ROI-E420 LED growThe HS 1 from TrolMaster is used to control commercial dehumidifiers. Most larger commercial dehumidifiers have a low volt control option so the dehumidifier can be controlled by an external humidistat. The HS 1 works and is wired exactly like an external humidistat. The HS 1 is the best way to control your dehumidifiers by eliminating the need to control the high amperage inrush current associated with dehumidifiers.