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Which Way Should It Go? - Checks continuity & polarity
- Auto power off
- Pushbutton operation
We've all been there. You're running speaker wires through your house, and you don't know which wire is which for polarity. Well this neat little kit takes care of it! Simply hook up the remote board to one end, and the main board to the other end. LEDs show you opens, shorts, polarity OK, and polarity reversed! It's that simple! A lot of uses besides speaker cables, think about it! Runs on a standard 9V battery (not included). Features auto power-off for long battery life. Main board measures 2.2" x 1.6". From Velleman.
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