The LDS PLUS control devices are a series of digital systems with single parameter and PID control, suitable for a wide range of applications. The LDS PLUS features: simple control via encoder wheel, flow control, local and remote control, ERMES web communication, permanent data storage with system log, PT100 temperature sensor, backup power input, water meter input, alarms, programmable delay at dosing start (up to 60 minutes), automatic temperature compensation, sensor reading menu (LDSCDIND PLUS), various operating modes (on/off, pulse proportional, proportional PWM and fixed PWM, PID), automatic or manual dosing, mA output, water meter mA input (optional), sensor cleaning and 5 relays (2 setpoints; alarm; sensor cleaning; circulation).