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Digital Multimeter with Auto-Ranging
-The T21D True RMS Multimeter is more than a basic Multimeter, it is an indispensable tool for homeowners and mechanics. You can set it to AC to measure house electrical voltage or DC for automotive settings, you can even use it to test batteries from AAA, AA, C, D to 9v.
-Taking temperature? No problem, just plug in with the supplied probe and select the meter to temperature reading either in Fahrenheit or Celsius.
-It can also measure Non-contact voltage detection, AC/DC current, and resistance, capacitance, frequency, duty cycle, test diodes and continuity.
-Automatic shutdown – no worry if you forget to switch off the T21D, it switches off automatically in 15 minutes.
-The T21D is a perfect tool for electricians to use in household, automotive and industrial electrical testing.
Technical parameter
DC volts Range: 600mV/6V/60V/600V | Resolution: 0.1mV/1mV/10mV/100mV
AC volts Range(true RMS): 600mV/6V/60V/600V | Resolution: 0.1mV/1mV/10mV/100mV
DC current Range: 60mA/600mA/10A | Resolution: 0.01mA/0.1mA/10mA
AC current Range: 60mA/600mA/10A | Resolution: 0.01mA/0.1mA/10mA
Resistance Range: 600Ω/6KΩ/60KΩ/600KΩ/6MΩ/60MΩ | Resolution: 0.1Ω/1Ω/10Ω/100Ω/1KΩ/10KΩ
Frequency Range: 9.999Hz/99.99Hz/999.9Hz/9.999KHz/99.9KHz/999.9kHz/9.999MHz | Resolution: 0.001Hz/0.01Hz/0.1Hz/0.001KHz/0.01KHz/0.1KHz/0.001MHz
CapacitanceRange: 60nF/600nF/6uF/60uF/600uF/6mF/100mF | Resolution: 0.01nF/0.1nF/1nF/10nF/100nF/0.1uF/0.001mF
Temperature Range: -20~1000C/-4~1832F
More Functions
Non-Contact Voltage Detection (NCV)
Just placed the probe near the outlets, sockets, and terminals to test voltage presence without the use of test leads, it is safe and convenient.
with Flashlight Function
A handy torch just in case you need to work in the dark.
Large Format Backlight Display
Large display screen with backlight makes easy reading in any lighting conditions.
Derek D
Reviewed in the United States on March 2, 2025
The fuses are inside Grey case, mine was DOA. F20A/250v fuse was blown on arrival. Figured they included one, as two are pictured, but both are the 0.6A. So off to the fuse store.....Update: new 20A fuse and works as intended, had to order 20, so I have a few extra now. FYI, These fuses are 5x20 fast blow.
Melissa Mulford
Reviewed in the United States on March 13, 2025
came with the 20a fuse already blown. it DID however come with two extra 0.6a fuses....have to buy a small pack of 20a fuses now...other than that, it works great for its price, which was around 20 somethin bucks at the time...
Customer
Reviewed in the United States on April 26, 2025
Do not purchase. Some functions inoperable. Specifically. The measurement I needed - capacitance- no measurements at all.
Miguel Narváez
Reviewed in Canada on August 7, 2024
Clear readings, easy to use
J. Goodwin
Reviewed in Mexico on December 31, 2024
Creo que tiene una buena relación calidad-precio. Es más grande de lo que parece, por lo que la pantalla es más grande de lo que esperaba y es fácil de leer. Tiene muchas funciones. ¡El manual solo está en inglés!
Robert Hoyle
Reviewed in the United States on December 11, 2024
Great value (for about 1/10 the price of a similar Fluke). The included carrying case is pretty thin. I check most readings and they were accurate. FYI, to access the fuses, you must remove the protective cover (not easy), then 4 screws and then spit the meter in half. Spare fuses come with it but they are both .6 amps. No spare 20 amp fuses. They are 5mm x 20mm fuses. Make sure you purchase spare 20 amp 250 volt fast blow type fuses (available on Amazon).
Christiane 122
Reviewed in Canada on December 11, 2024
Pour nos besoins électriques cet outil est parfait!
D_Chap
Reviewed in the United States on October 18, 2024
Initially, I had a problem with the temperature function. I couldn't get it to show Fahrenheit temperatures. I contacted the seller and got a prompt response (a video showing how to switch it between F and C). When I pressed the FUNC button, it switched between F and C like it was designed to do. I don't know why it wouldn't do that before I contacted the seller - Murphy's law or something. At any rate, it works now. The meter is sturdily built, easy to read, has a flashlight and a backlight. I like the magnet on the back of the case for sticking it onto a steel cabinet or similar item. The leads are flexible but not flimsy. The seller was prompt to respond to my query. 5 stars.
Stevo
Reviewed in the United States on April 9, 2024
I really is improvement to my old device and has true RMS. True RMS multimeters are designed to accurately measure both sinusoidal and non-sinusoidal waveforms, making them suitable for a wide range of electrical measurements. The price is very reasonable as this will only be used infrequently.
Rob8
Reviewed in the United States on April 11, 2024
I was pleasantly surprised when I opened the box. Nice case, big display, and it fits comfortably in your hand. I checked AC and DC voltages with a calibrated power supply and it is dead accurate on all ranges. Same with resistance, frequency and and diode voltage drop. I know the thermocouple accuracy has been an issue for some. Maybe I just got lucky, but the temperature reading of the ambient air agrees within 1 degree of two thermometers I have in the house. For this price I have zero complaints. Of course I'd like to have a Fluke meter with the same functions, but they are crazy expensive even when bought used. How long this lasts remains to be seen but now it is a great deal.
Liana Nicole
Reviewed in the United States on August 5, 2022
We recently bought our first home. The electrical panel is outdated so my husband asked for this Digital Multimeter electrical tester for father's day. He absolutely loves it! ItsReally easy to use because of its compact design.The ability to conveniently test our electrical system has given us much-needed peace of mind.We have utilized it numerous times over the past couple of months.The no contact voltage testing is his favorite function. It operates as accurate as the hands on AC and DC voltage testing.It has already paid for itself.It has even helped us pinpoint an issue with our car. saving us A $200 diagnostic fee.No regrets with this purchase.
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