The Bauser Twin contains two different counters as digital displays in one affordable counter. You have two counters in one device. Choose between the following software configurations (the background counter is visible for approx. 10 s after being turned on): TYPE Twin 1: Timer as priority display with button zero setting &ndash Total time counter as background counter without zero setting. TYPE Twin 2: Pulse counter as priority display with button zero setting &ndash Total pulse counter as background counter without zero setting. TYPE Twin 3: Timer as priority display &ndash pulse timer works in the background (counts the switch frequency, without separate counting input), both counters are electrically resettable &ndash also the pulse counter when it is visible in the display!