... sensor The selection is made using the faceplate keys. A digital input (24Vdc/4mA) is available for resetting, hold, flash, ... 150) is available for retransmitting the measured input signal. The retransmission output, the digital input and the third output are alternative. The ... sensor The selection is made using the faceplate keys. A digital input (24Vdc/4mA) is available for resetting, hold, flash, ...