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Double-barbed ends for a tight seal
Ultra quiet UL-certified USB fans
EC and temperature in reservoirs
spider mites and whitefly
TrolMaster Hydro-X Dry Contact Station (DSD-1) WNR Double-barbed ends for a tightDry Contact Station for the Hydro X Environment Control System. Description The Trolmaster DSD 1 Dry contact module provides a simple and flexible solution to users who want to connect & control devices to the Hydro X using a dry contact or relay to activate the device. Some equipment requires either normally open or normally closed contact closure in order to activate the equipment. The DSD 1 is the product that you need to control those types of
