KL-203 Digital pH/ORP Controller

Product description:: Dual monitoring of pH and ORP in large LED display and single control of either pH or ORP. Highly accurate. 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 belo