Andy from Positive Motorsports shows you the basics of the MyChron4 Digital Gauge and Data Logger. Learn to set up basic settings as well as what the external buttons and connections do.
Mine doesn't have low temp option, it would be handy when warming engine pre practice/race. Warm until left led goes off, set at 45c. set max to 64c so right led comes on to let you know you're running hot, all for example.