What about using a relay? I have a G2VN-234PH-US (http://www.datasheetarchive.com/G2VN-23
... sheet.html) but it has so many pins that I am confused on how to connect it.
Specifically, how can I wire this relay so that it would take the logger circuit and turn it on & off based on the command from the arduino digital pin?
The above datasheet has the wiring details of the relay (with numbered pins) and here is a "general" wiring diagram (http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1293881907/2
). Specifically... which cables go to which pin in the relay?