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The Cole-Parmer 19300-00 Conductivity Controller Model 3101  allows you to control conductivity with these easy-to-use controllers in standard or low range. Controllers have independent high/low set points that control two SPDT relays. Interface recorder output to a recorder or datalogger to make permanent records. Recessed set point adjustments and internal DIP switches for range selection prevent accidental adjustment. Terminal strip and wiring diagram on the back of the unit make connections easy to follow.