20 Most Recent Mastech MS8902A 600V Noncontact AC Voltage Detector Questions & Answers

http://www.youtube.com/watch?v=lDiTJnY4gKQhttp://www.lemona.ee/LIUSE/NI/En/Pdf/MS8902A.pdf

The red light means you are near a Hot (Black), or any hot wire or outlet. Remember, on this kind of tester, it is only to know if you have power in the circuit. It will not register on the common (white) wire, or green ground.
I am attempting to upload the owners manual for you. Good luck! & Thank you for using Fix Ya.

The green light flashes when you turn on the unit, or adjust the sensitivity. Hold the front arrow to increase the sensitivity. Hold the rear arrow to decrease the sensitivity. The unit only senses the hot (black) wire. To test the ground or common, you will need a contace tester, not this non contact tester. Set the new default by adjusting the sensitivity on a known good outlet. When you have reached your desired default sensitivity, press and hold both arrows at the same time for two seconds. The new default sensitivity is now set, and will return to that point every time you turn the unit off, then on again.
This unit is designed to only let you know if you are handling a live wire or not.

Good luck!

+ is positive

- is negative

jxsfj kndbv kjzdbvjk

https://www.youtube.com/watch?v=dk1ifG9ezAs

i've just uploaded the pdf manual but it's useless, just gives spec. and i was looking for what the 'H' button was for...

output on what?

I want to use an old sensor forgiven during 30 years. I have no more manual, off course. Thanks for your answer

Most moisture meters measure the moisture content of wood or concrete is measured in percentages. So if the reading says 15 that means that there is a content of 15% moisture in the concrete.