TOPIC: gps speed pulse input for ART-120

Numbers on the back of the monitor are 085030 and RBRTH1200.

Our records show that your monitor was built in October of 2005.

As for the work switch, I believe the connections are the same as for the speed sensor. Work switch would connect from pin 3 (GND) to pin 6 (signal).

Your monitor does have the optically coupled inputs. Like Reid said, there is only 1 input signal line on the mini-DIN port. There is no way to run a speed sensor and a work switch on that connector.