My New 4-1/2 Digit Multimeter
This critter resolves voltage and current measurements down to the at's gnass! Tekpower TP9923B 4 1/2 Digits High Accuracy Multimeter with Display 19999 and Back Light (Digital Multimeter),...
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Near as I can tell time-wise the meter I mentioned shuts off after 20-min. I did not time it but it does auto-sleep.
