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Amprobe AM-500 DIY-PRO Digital Multimeter

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This versatile, easy-to-use digital multimeter is a great choice for homeowners or office maintenance staff. Use it to check for voltage in receptacles, extension cords, light fixtures, batteries, and other electrical circuits. Or check fuses, light bulbs, and continuity of electrical connections. You can even use it to verify the voltage level of automotive batteries and troubleshoot electrical problems in cars. With its user-friendly digital multimeter features like autoranging and a CAT III safety rating, the AM-500 will save time and increase measurement confidence.

AM-500 AM-510 AM-520 AM-530 AM-560 AM-570

Multimeter Type Auto-ranging Com / Res HVAC Electrical Adv. HVAC Industrial
Safety Rating Safety CAT III 600V CAT III 600V CAT III 600V CAT III 600V CAT IV 600V
CAT III 1000
CAT III 1000
Measure voltage in noisy environments True rms

Electrical panels, AC outlets AC Voltage (V) 600 600 600 600 1000 1000
DC systems, auto/marine batteries DC Voltage (V) 600 600 600 600 1000 1000
AC Current - electrical panels, appliances AC Current (A) 10 10 10 10 10 10
DC Current-electronics, DC motors DC Current (A) 10 10 10 10 10 10
Specified resistance and continuity Resistance (MOhms) 20 40 40 40 60 60
Flame sensors Microamps
Diodes in AC to DC converters Diode Test
Fuses, lightbulbs, wire connections Continuity
Household batteries Battery test

Motor startup or run capacitors Capacitance
Frequency verification Frequency
Non-contact voltage test Non-contact voltage
Electrical load-time on vs time off Duty cycle

Temp of air vents, fuses, transformers Temperature inputs

1 1 2 2
Automatically selects measurement range Autoranging
Manually select measurement range Manual ranging
Voltage on variable frequency drives Low pass filter

Detect stray voltages Low Z

Dimly lit areas Built-in flashlight
Meter resolution LCD Counts 2,000 4,000 4,000 4,000 6,000 6,000
Dimly lit areas Backlight
Monitoring fast changing signals Bar graph

Two relative measurements on one screen Dual display

Data memory Data hold
Difference between two measurements Relative reading
Max/min peak measurement Max/min hold

Specialized signal measurements Peak hold (crest)

Amprobe AM-500 DIY-PRO Digital Multimeter is rated 4.6 out of 5 by 28.
Rated 3 out of 5 by from Auto Shut Off on 420? Recently purchased a AM 420 multimeter from Grainger. It was listed as auto shut off. It did not. I questioned Grainger and they sent another thinking the first was defective. It also did not auto shut off. Grainger claims they contacted Amprobe and Amprobe said it may take ten minutes to shut off. I had both on overnight and they did not shut off. Somebody does not have their story straight.
Date published: 2019-01-31
Rated 5 out of 5 by from SOLID We nice meter. Feels solid in your had and handle abuse well. Much better then the Klein meter I replaced.
Date published: 2018-12-17
Rated 5 out of 5 by from Great Multimeter!!! Best purchase I have ever made I use it to installs and diagnosing cars and motorcycles. Very accurate and feels heavy duty. A must have for every house hold.
Date published: 2018-11-02
Rated 5 out of 5 by from Great multimeter This multimeter is simple and accurate. Easy enough for anyone to use, regardless of experience levels.
Date published: 2018-09-21
Rated 5 out of 5 by from Amazing tool I bought this meter and have used it a ton. Extremely easy to use and I highly recommend it to everyone. I’ve had guys set their down and use mine instead.
Date published: 2018-09-21
Rated 5 out of 5 by from Exceeds expectations I purchased this product when I needed to troubleshoot a circuit on my air conditioners capacitor. Not only was I extremely satisfied with the function of the meter, it looks sharp and overall is just very comfortable to use. I would recommend this to every homeowner.
Date published: 2018-09-11
Rated 4 out of 5 by from Definitely DIY Great for the occasional electrical repair or troubleshoot. Probably wouldn't use it every day for a living. Seems well built, easy to read, although the numbers seem to "hunt" for a strangely long time sometimes. Not a big deal.
Date published: 2018-08-20
Rated 3 out of 5 by from Has what is all needed for most people and applications This is mostly for commerical rough and tough use of the product because it lasts so long on rough usage. Aesthetics could be better
Date published: 2018-08-11
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  • Measures voltage to 600V AC/DC, AC/DC current and resistance for residential and office maintenance
  • Audible continuity quickly identifies shorts and open circuits
  • Diode test to verify diode polarity
  • Data hold freezes the reading on the display for further analysis
  • Auto power-off conserves battery life
  • Low battery warning helps avoid losing power in mid-measurement
  • CAT III 600V safety rated to handle residential and commercial office applications
FEATURE AM-500 Best Accuracy
AC Voltage 2.000 V, 20.00 V, 200.0 V, 600 V +/- (1.0 % rdg + 3 LSD)
@ 45 Hz to 400 Hz, 2 V to 200 V ranges
DC Voltage 200 mV, 2.000 V, 20.00 V, 200.0 V, 600 V +/- (0.8% rdg + 1 LSD)
@ 2 V to 200 V ranges
AC Current 200.0 μA, 2000 μA,
20.00 mA, 200.0 mA,
2.000 A, 10.00 A
+/- (1.2% rdg + 2 LSD)
@ 200 μA to 200 mA ranges, 45 Hz to 400 Hz
DC Current 200.0 μA, 2000 μA,
20.00 mA, 200.0 mA,
2.000 A, 10.00 A
+/- (1.0% rdg + 2 LSD)
@ 200 μA to 20 mA ranges
Resistance 200.0 Ω,
2.000 kΩ, 20.00 kΩ, 200.0 kΩ,
2.000 MΩ, 20.00 MΩ
+/- ( (1.0% rdg + 2 LSD)
@ 2 kΩ to 200 kΩ ranges
Battery test 1.5V, 9V +/- (10% rdg + 3 LSD)

For more detailed specifications, please download the product datasheet under the “Resources" tab.
Model NameDescriptionBuy it
AM-500Included Accessories:
  • AAA x2 batteries (installed)
  • Test leads
  • Users manual
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