Trolmaster Dry Contact Station Wall Fans & Others This will give you the This will give you the tightest looking finished trim possible Supernatural Nutrients Super Boost uses high quality ingredients critical to plants in the late stages of the growth cycle The DSD 1 connects into the “devices” line on the Hydro X and can be set to control an almost infinite number and types of devices such as:Lighting contactorsLight Deprivation curtainsPump contactorsTemperature devicesHumidity devicesCO2 devicesFeatures:LCD Display for easy operationSeamless connection with Hydro XMultiple purposes assignmentPlug & playPackage includes:1 x TrolMaster Hydro X Dry Contact Station1 x TrolMaster 16ft RJ12 Cable1 x TrolMaster 4ft RJ12 Cable1 x TrolMaster RJ12 T Splitter Some equipment requires either normally open or normally closed contact closure in order to activate the equipment