The J DIGITAL controllers are a series of single-indicator systems, rack-mountable (96x48) suitable for a wide range of applications. They can set and monitor: pH, ORP, chlorine (depending on sensor: total chlorine, free chlorine, chlorine dioxide, hydrogen peroxide, ozone, bromine or paraacetic acid), conductivity, ozone, chlorine dioxide and temperature. Sensors not included. J DIGITAL models have: 2 setpoints (on/off), flow alarm, flow sensor, backup power input, 0-20 mA or 4-20 mA output, proportional to reading, programmable within reading range. IP54 protection cover available.