The Milwaukee Instruments ORP/pH Monitor/Controller SMS125 is a combination of the SMS122 pH Monitor/Controller and SMS510 ORP Monitor/Controller. This dual monitor has 2 point manual calibration for pH and a set point range of 4-8 pH with a visual alarm and controlled outlet for readings above the set point. The ORP set point-range is 0 to 600 mV with a visual alarm and controlled outlet for readings below the set point. It includes electrodes, calibration solutions, AC adapter, and controlled outlets. Product Manual (pdf file in new window)