Do NOT use the free HF meter on your vehicle!!!
See the reason below. Text is from a textbook I am using in Automotive Technician class in college.
TERMINOLOGY Digital multimeter (DMM) and digital voltohm-meter (DVOM) are terms commonly used for electronic highimpedance test meters. High impedance means that the electronic
internal resistance of the meter is high enough to prevent excessive
current draw from any circuit being tested. Most meters today have
a minimum of 10 million ohms (10 megohms) of resistance. This high
internal resistance between the meter leads is present only when
measuring volts. The high resistance in the meter itself reduces the
amount of current flowing through the meter when it is being used
to measure voltage, leading to more accurate test results because
the meter does not change the load on the circuit. High-impedance
meters are required for measuring computer circuits.
CAUTION: Analog (needle-type) meters are almost always
lower than 10 megohms and should not be used to measure
any computer or electronic circuit. Connecting an analog
meter to a computer circuit could damage the computer or
other electronic modules.
A high-impedance meter can be used to measure any automotive circuit within the ranges of the meter
A good budget DMM is a UNI-T UT139C for between $35-50. At that price it's a far superior choice to the $5 HF meter. You're not spending Fluke $'s but getting features found in the higher end Fluke models.
Cat III safety, NCV, Temp, Capacitance, True RMS, Backlit, etc, etc.
Upgrade to a Probemaster probe kit and you'll have a real nice affordable setup.

Do NOT use the free HF meter on your vehicle!!!
See the reason below. Text is from a textbook I am using in Automotive Technician class in college.
TERMINOLOGY Digital multimeter (DMM) and digital voltohm-meter (DVOM) are terms commonly used for electronic highimpedance test meters. High impedance means that the electronic
internal resistance of the meter is high enough to prevent excessive
current draw from any circuit being tested. Most meters today have
a minimum of 10 million ohms (10 megohms) of resistance. This high
internal resistance between the meter leads is present only when
measuring volts. The high resistance in the meter itself reduces the
amount of current flowing through the meter when it is being used
to measure voltage, leading to more accurate test results because
the meter does not change the load on the circuit. High-impedance
meters are required for measuring computer circuits.
CAUTION: Analog (needle-type) meters are almost always
lower than 10 megohms and should not be used to measure
any computer or electronic circuit. Connecting an analog
meter to a computer circuit could damage the computer or
other electronic modules.
A high-impedance meter can be used to measure any automotive circuit within the ranges of the meter
Do NOT use the free HF meter on your vehicle!!!
See the reason below. Text is from a textbook I am using in Automotive Technician class in college.
TERMINOLOGY Digital multimeter (DMM) and digital voltohm-meter (DVOM) are terms commonly used for electronic highimpedance test meters. High impedance means that the electronic
internal resistance of the meter is high enough to prevent excessive
current draw from any circuit being tested. Most meters today have
a minimum of 10 million ohms (10 megohms) of resistance. This high
internal resistance between the meter leads is present only when
measuring volts. The high resistance in the meter itself reduces the
amount of current flowing through the meter when it is being used
to measure voltage, leading to more accurate test results because
the meter does not change the load on the circuit. High-impedance
meters are required for measuring computer circuits.
CAUTION: Analog (needle-type) meters are almost always
lower than 10 megohms and should not be used to measure
any computer or electronic circuit. Connecting an analog
meter to a computer circuit could damage the computer or
other electronic modules.
A high-impedance meter can be used to measure any automotive circuit within the ranges of the meter

...........
This meter will be fine. It will also work well for checking D, C, AA batteries...and the occasional outlet in his house.

This meter will be fine. It will also work well for checking D, C, AA batteries...and the occasional outlet in his house.

When you're checking an outlet you're usually checking to see if it is live before you start working on it.
Did you honest-to-God just recommended people use a free HF multimeter to check whether or not they're at risk of getting electrocuted?
Because that would be some really bad advice.![]()
When you're checking an outlet you're usually checking to see if it is live before you start working on it.
Did you honest-to-God just recommended people use a free HF multimeter to check whether or not they're at risk of getting electrocuted?
Because that would be some really bad advice.![]()
110 won't electrocute you, it will shock you. Pet peeve.
The correct procedure would be to measure the circuit, flip the breaker, and confirm the reading has changed before starting work. If you want to be all safety sally anyways. Many will just use a 110/220 "test light" found at home improvement stores. Or be like me, and kill the main, then confirm no power on the circuit.
When most people say "check an outlet" they typically mean:
Lamp doesn't work.
Change bulb, still doesn't work.
Use $5 volt meter to see if something resembling 110AC current is present.
I bought a fluke 362 last year. It is a clamp amp meter. I bought it specifically for this functionality, but it also has the standard multi-meter features. I recommend this unit. It isn't overly expensive and gives you the ability to clamp wires and read the current flow. I used it specifically to check alternator charge / discharge rates. I have a mid grade craftsman one that gets used regularly (maybe a $20 unit at the time). It has a rubber protective case with a built in stand. I only break out the fluke to clamp wires and for critical readings.
I also added a Fluke infared temperature gage. Its a handy tool. I believe in Fluke and will someday have a standard multimeter. Cheap electronics such as the harbor freight ones might work, but I tend to question their accuracy.
That is a really bad response because you sound like you don't know what you are talking about.
I should add...I've used one many times in my house to check outlets to see if they are hot....
The ONLY issue I've had with the meter...are the POS test leads.
But, I was able to use an old set of leads from my Fluke on the meter...
So....spare me the 'Harbor Freight is bad' comments....
That meter is no more dangerous than my Simpson 260. Put it in the wrong mode and you can get magic smoke escaping from it as well.
110 won't electrocute you, it will shock you. Pet peeve.
220/240 sure will, though.
You know as well as I do the average person will flip a breaker, stick probes in the outlet, see a zero on the meter and go to work with their screwdriver.
So you'll have to excuse me if I take reality into account when I post advice on the internet where any noob DIY'er can read it.

The first one shows what it looks like when you try to plug Fluke leads into one of these. The sockets are too shallow for the Fluke leads to seat properly.
The second picture shows me attempting to short the leads in the Ohms range, which should result in a zero being displayed on the screen. Instead, the meter is showing open circuit because the Fluke leads can't even reach the contacts in the sockets.
I have some Fluke style leads. I trimmed the plastic tube over the banana plug so they fit my HF meters. Worked out well.