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20'x48' Semi-Gable greenhouse frames have taller sidewalls that reach a higher peak than the Quonset greenhouse frame type
Once installed
It also provides greater flexibility and allows any plug-in module to be addressed to be whatever the user wants
Some equipment requires either normally open or normally closed contact closure in order to activate the equipment
Dry Contact Station Single Pack with cable set. usa made 20'x48' Semi-Gable greenhouse frames haveThe Trolmaster DSD 1 Dry contact module provides a simple and flexible solution to 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 devices. * The DSD 1 can be configured to work as the other Trolmaster power modules
