I'll check the manual when I get home from work. I'm getting to play boss this week, so I'm mostly desk bound (what a PITA), but it allows me to poke around here
If you could post a picture of this device, it would help in ID'ing it.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.