The batch relay is dedicated to valve on/off control. It is energized at the start of the batch cycle and de-energized at the end of the batch cycle. It also can be manually deenergized by selecting STOP from the front keypad or by a remote contact closure to the rear STOP terminals. A RESUME command can be given by either method to complete the batch or a START command can be given to start again from the beginning the batch cycle. The OUT1 icon on the LCD is always on while the corresponding green led indicator turns on when the batch is in progress and the contact is energized.