Professional electrician, old school
This device, commonly known as a "wiggy," is a coil / solenoid device, old technology, which uses electrical current to move the red bar indicating about how many volts, whether DC or AC current. It also indicates whether a lead/electrode/wire has voltage by the use of the positive/red lead, a red led comes on if voltage is present. It also indicates continuity with the use of the two leads, which is very useful.
This may sound like what many other multi-meters and devices do, but the difference is, this old technology is absolutely dependable. I also have many of the currently made high tech multi-meters and use them a lot, but the wiggy always comes out first for dependable trustworthy "life-depends-on-it" information quickly.
When this is connected to wires with sufficient voltage, the red bar moves to indicate about how many volts are present, and it makes a sound, and vibrates, all of which instantly tell you the whether the lead is hot, and about how much voltage is present. When I am trouble shooting, this is the instrument I use. It quickly and accurately lets me know which circuit breaker is on/functioning and whether it has the full voltage AND current. This is where it shines up against the high tech modern devices. The latest multi-meters will give false voltage readings, showing voltage where there is none. This is due to impedance and capistance induced voltage which new solid state devices will show but the old tech solonoid wiggy does not. It can be very frustrating trying to correct a problem which does not exist, which will show to exist on new high impedance multimeter devices.
I own and use multimeters made by Fluke, unitech, Klein and others which just are not as dependable and will show false voltages. This device is the one I reach for every time doing a troubleshooting job. They are rugged and dependable. But they are not loss nor theft proof, and thus the reason I just purchased this one, my 4th.
J W
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