Why is my meter showing a random, changing reading when the test leads are not connected to anything?
On some low AC and DC voltage ranges, the display may show a random, changing reading when the test leads are not connected to a device — this is normal and is caused by the high-input sensitivity. The reading will stabilize and give a proper measurement when connected to a circuit. (Page 10)
From the official Craftsman 82141 manual, page 10
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