Ultra-Sonic Ranger - GH-311RT DATASHEET?

I would still very much like someone’s comments on what voltage is required (5V ok, or 6V+ required).

About my previous message, the default code given here works, but it’s very inefficient since it uses a default timeout of 1sec on pulseIn.
Bounding this by 38000 us would likely be ok, but a much better answer is to use the custom library NewPing.

code.google.com/p/arduino-new-ping/