Today I was installing some new Insteon devices to control lights other stuff.  I needed to determine if the circuit was energized.  I have a large variety of test equipment that could answer that question, DVM, VTVM, Probe, and just a normal analog volt meter.  The thing that caught my eye was the Christmas light tester, it has a voltage proximity detector built into it.

I wondered how many people had one of these and didn''t know they had a rather sophisticated voltage tester for home use.

It works great, make sure the LED lights up to confirm the three LR44 batteries are good, and point the loop nose of the Light Keeper Pro near the wire.  Beeping means don''t touch the wire!  It only works an inch away from the wire, so touch the insulated part of the wire with the nose, or get it real close.

Everybody should own one of these, well at least until the LED bulbs take over the season. Then they''re going to need one of these.