MicroSet Dissolved Oxygen Indicating Controller Transmitter Model MS DO 27 is used for various industrial applications such as ETP, STP, WTP, Package drinking water, Power plant. MS DO 27 is a convenient and cost effective solution for monitoring and maintaining DO value. MS DO 27 accept input from any DO sensor in the form of milli Volts. MS DO 97 output is in the form of Analogue 4-20 mA DC or MODBUS RS 485 RTU (Optional). Online DO indication provided through 1” bright large LED which is easily readable, 2 Nos Relay Outputs are provided to operate Alarm, Solenoid Valve, Pump etc.4 Nos Setpoints for Relays can be programmed using Frontal Keypad.