ahhh..
yes they are also called false alarm meters...voltometers....and more commonly these days know as a m-u-l-t-i-me-t-e-r-. Some are automatic and detect the correct settings and voltage range....prices range from $10 - $1000 depending on features...I guess with batteries so cheap these days anything over 12 months to two years old (date hopefully written on top of the battery as per the standards) just gets automatically replaced when doing a service call
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