Accessories

Works adequately
It seems like you have to experiment a bit to find the best way to orient the wand for maximum response (maybe it even varies by the brand of breaker box and breakers). For me it seemed to work best when the tip of the wand was parallel with the outer edge of the breaker. When you do find the "right" breaker you'll get both the tone (not to be confused with the ever-present 60Hz buzz) and the top red light is illuminated. Sometimes it seems like I get a "tie" -- pick one, open it, if the tone doesn't stop, it's the other one. Even under the worst of conditions where you can't decide, it's still somewhat handy, since flipping breakers one a time until the tone stops still beats flipping a breaker and jogging to some other part of the house to see if you got the right one.

Works Great!
The unit works great! I was able to find the correct circuit breaker every time, and very quickly. Two hints for successful use: First, this unit is sensitive to noise on the power line, especially the kind that comes from digital power supplies found in computers, home theatre components, etc. To help get a clear reading from the unit, turn these kind of loads off first. The noise can mask the "real" reading. When you get a good reading, you will hear a pulsing tone, and the visual display goes to the maximum reading. The noise typically sounds like continuous buzzing. I was able to use the unit on a circuit with a massive home theatre system running (twin 1600 watt digital sub-woofer amps). It just takes more concentration, and a familiarity with what is noise and what is the tone you're looking for. Second, this is not an auto-ranging unit. You will have to pay attention to the volume of the pulsing tone, and the reading on the visual display looking and listening for the maximum response. When you do so, the unit will find the right breaker. The unit will not be silent for other breakers; it will simply respond less strongly.

ELECTRIC CIRCUIT FINDER
This is exactly what I was looking for. It's an indispensible tool when you want to "do it yourself"!

GB-GET1200 circuit tracker
I have been an electrician for 25 years and I have found this to be the most helpful circuit tracker on the market.

No Good
I bought this from a mail order catalog and couldn't wait to try it out. My high expectations were quickly dashed, as the unit beeped and indicated 6 breakers as to being the correct one to shut off. I finally started shutting off the breakers one by one and none of the 6 were it.

Needless to say, it was returned right away.