LCD Display, Easy Operation Seamless Connection with Hydro-X Multiple purposes assignment Plug & Play The 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 work. 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 devices* Consult FGI or Trolmaster for questions concerning your particular device. Package Includes: 1 x Dry Contact Station DSD-11 x 16ft RJ12 Cable1 x 4ft RJ12 Cable1 x RJ12 T-Splitter Specifications: Input Voltage: 100~240VAC, 50/60HzOutput Current: 10AOutput Voltage: 100~240VAC, 50/60HzWorking Environment: Temperature 32-122°F, Humidity=90%Packaging Dimensions: 85mm x 80mm x 90mm