KL-2012 Digital pH and ORP Controller

Product description:: Digital pH-ORP controller with large size LED display for easy reading. High input impedance avoid measuring error. Built in SLOPE and CAL. adjust knob, easy for single point or two points pH calibration. "PH - ORP" control, the relay "PH" when measuring value is above the set point for pH. And the relay "ORP" when measuring value is below the set point for ORP.