Are you talking about a pinpointer? If so, depending on which one you get, when the tip is within an inch or two of your target, it will "buzz", "vibrate", or light up.
Keep in mind that they don't have discriminators so if you're close to anything, ferrous or non ferrous, it will go off.
Excal 1000, Excal II, Sovereign GT, CZ-20, Tiger Shark, Tejon, GTI 1500, Surfmaster Pulse, CZ6a, DFX, AT PRO, Fisher 1235, Surf PI Pro, 1280-X, many more because I enjoy learning them. New Garrett Ca
Scroll down to see the meter ID numbers that Mike of VA posted. These are the same pics he sent me. You can laminate them for attaching to the top of your meter.
Now you have to get the Sun Ray S-1 inline probe too.
I got the digisearch yesterday seems to work fine Had to side mount it though ,, really nice set up from Dixie ... very easy to see now ,,mounting it on the stock shaft ,you couldn't see it .. ,,Sandman those ID numbers that mike sent really came in handy... Thanks a bunch guys for posting ... Guzz1