In the previous company, I used the following finder: Fluke Networks PRO3000
(photo from Amazon)
It has a short-circuit test and can generate either a continuous or a modulated signal to search for a wire.
- you can find the cable quite accurately in the wall
- cables terminated with crocodile clips with spikes for hammering into the insulation, although it is better to hook it on a bare wire
- quite long cables
- for 2 pieces (one about 4 years older) no spoilage
- thanks to the analog signal, the loudspeakers can be tested directly :P
- the need to work with someone in a hand to hold the black wire or clamp it to a good ground, which will not always be found
- disturbances when searching for live cables in a bundle
- at large distances, the possibility of inducing a signal on, for example, a plasterboard rack or other cables (it can be "overcome")
I know I probably didn't discover America, but I wanted to share.