If you're a good electrician you could probably do it without too much of a problem, but it'd be far more practical to use a laptop with a car adapter. That way you can atleast gain some details about the networks, how many, different access points. Not just "Network detected." With the laptop, you'd get so much more information.

An extremely good electrician could probably also find a way to hook it up to their laptop...but there's no real point in that, is there?