BTR Art no 110660 - (Summary) Used for manual control variable definition, e.g. mixing valves, valve positions, temperature values, etc. The module can be operated in two modes, which can be commuted by means of integrated two-level switches (manual, automatic). The switch position is signalized by external control contact terminals S1 and S2. The control variable can be set on the potentiometer at the front. The output signal 0 to 10 V is available on the Y terminal. If the switch is in "AUTO" position, the control variable is looped through over the YR terminal to the Y output without change.