The TrolMaster DSP-1 program device module (timer module) works like a multi-function timer. The DSP-1 allows the user to easily connect any device that needs to be controlled by TIME to the Hydro-x. Any device that is 10-amps at 120 volts or less can be controlled by the DSP-1. Features: LED Power Indicator 3-Prong Attaching Plug RJ12 Cable Socket Addressing Plug & Play Specifications: Input Voltage: 100~240 VAC, 50/60Hz Output Current: 10A Output Voltage: 100~240 VAC, 50/60Hz Working Environments: Temperature 32-122°F, Humidity=90% Package Contents: 1 x Device Station 1 x 16ft RJ12 Cable 1 x 4ft RJ12 Cable 1 x RJ12 T-Splitter LED status: * Blinking green FAST: If the LED is blinking quickly, that means the module has not been addressed to the controller OR that module does not have a good connection to the controller. *Pressing the small button on the module will address/link the module when first installed. * Blinking green SLOW: If you see a slowly blinking green LED, that means the module is addressed and connected to the controller, and the module is currently turned OFF. * SOLID green: If you see the LED is on solid (no blinking) that means the modules are addressed, connected and currently turned ON. * Blinking red: If you see the LED change to blinking red, that means the module has been overloaded. To reset the overload unplug the module from the power.