FNIRSI DMT-99 Digital Multimeter 9999 Counts TRMS, Rechargeable Auto-Ranging Volt Meter with Recording and Monitoring Data Mode, Resistance, Capacitance, Diode, Frequency, NCV, Current Voltage Tester

This thing does everything that a multimeter should do. What this sets the DMT-99 apart from other multimeters in its price range ($37 at the time of writing this review) is its digital display with the graph mode, which cycles after a little over 30 seconds, and makes it infinitely easier to diagnose those pesky intermittent parasitic drain that spikes for a second and then goes away for the next 2-3 minutes. Other multimeters in this price range lack this feature. I purchased this multimeter and combined it with a Lisle 64970 parasitic drain testing harness to test my vehicle for intermittent parasitic drain. The graph mode (shown as the "recording mode") made it a lot easier since I didn't have to keep my eyes glued to the display the entire time. It also has the ability to display minimum and maximum detected levels. The only downside is there isn't a way to scroll back to see older chart, but you can mark and save the displayed current/voltage. Fortunately, the level of parasitic drain I discovered is within the norm of a modern vehicle, but the graph mode made it extremely easy. NCV works great, and the beep is audible enough but not annoying. I was also impressed with the battery capacity. I fully charged the device and had this thing running in frigid temperature (30 to 40°F in the shade) for about 3-4 hours while performing the test, and the battery level meter only went down from a total of seven bars to six. In terms of size and weight, it's about average in its class. You can put it in your pocket, but you'll definitely notice it's in there. This multimeter is definitely worth the investment. It more than paid itself off after a single use. Even accounting for the Lisle 64970 harness, the combined cost of the two ($60) is vastly less than what mechanics charge for parasitic battery drain testing, which can range from anywhere from $120 to $200 depending on where you live.

It arrived in good shape and had everything but a thermocouple for measuring temperature. I'm not an expert on these and I got to measure tail amps for flashlights. I based my decision for buying this because I have other FNIRSI products. I have used it to measure the voltage on some batteries and it was very accurate. It has a really nice screen and the buttons respond well when you make a selection. Charging is easy with the built in USB C charging port. You can use the box to store it because it is protected very well with the foam in the box. Or you can take the foam out of the box and use it in a case. I definitely recommend this multimeter. Even for a beginner, it's very easy to use.

Outstanding analyzer and multimeter. Easy instructions built toughness well designed easy setup and great for all applications and testing situations. Easy choice and fantastic price. You want the best you deserve the best so go for it you deserve this do it for you. By something you will have forever.

I'm engineer and my old branded multimeter do less things than this one. Good relation price benefits.

First this was well packaged from the factory, has a well written manual. Im looking forward to using the monitor and record features on this meter. This should help when troubleshooting an intermittent problem. The display is easy to read and seems easy to change what settings your usng. It has a rechargeable battery installed in it, which was mostly charged when it arrived. This is a fantastic value for the features it has.

I had several meters lying around—some dead, others not user-friendly. Frustrated, I took a chance on this one, and it’s been fantastic. Unlike my old meters that shut off mid-task, this one stays on, which is a huge relief. It has a USB-rechargeable battery with excellent life, letting me work all day without issues. The screen is clear, easy to read even in moderate sunlight, and it powers up quickly, so I can get to work fast. As an ARO, these features matter to me. The measurements seem accurate, though it’s a bit slow with some capacitors, but the readings are spot-on. The probes are very sharp—I’ve poked myself a few times—but their sharpness helps when measuring wires without cutting them. Overall, I’m really impressed with this meter!

Needed a meter to test capacitance on an AC-unit capacitor, and this one delivered. Auto-ranging, true-RMS, easy to use in cramped spaces, and it handled the job without fuss. If you're doing DIY HVAC or electrical work, this meter’s a smart tool to have. Easy to read screen and can be set to auto for extra ease of use.

Unknown how this meter can be purchased at this price. It is a phenominal meter in most respects, the most is its rather slow processor doing capacitor value readings on larger caps. Super for reading AC, DC, ohms without ever touching meter. Auto switching ranges and whatever you are measuring.

Cumple perfecto con lo descrito, su modo automático te sirve para la mayoría de ocasiones, de todas formas puedes ajustar manualmente qué unidad de medida quieres tomar. También cuenta con características únicas para una herramienta de su rango de precio, tiene historial de lecturas y puedes monitorear las lecturas expresadas en gráficos. Definitivamente hay mejores pero ya estaríamos hablando de gama alta y marcas de precios altos. Por lo que cuesta no puedes encontrar un mejor multímetro, eso sí, las puntas de las terminales se perciben algo frágiles así que mucho cuidado.

Works great. Tks.

The FNIRSI DMT-99 delivers accurate and stable readings for voltage, current, resistance, and more. Auto-range and TRMS functionality add to its versatility. The rechargeable battery and data-hold/recording mode make it convenient for extended work. Good build quality and value — I recommend it for both hobbyists and professionals.

Se siente calidad, es fácil manejarlo y si eres flojo úsalo en automático... como sea, es un excelente multímetro con mediciones precisas. Principalmente lo uso en aplicaciones de electrónica y hace muy buen su trabajo, igualmente emite suficiente energía para hacer pruebas de diodo con LED's (cosa que los de dos pilas difícilmente pueden).

I love the auto detection of this unit. Turn it on and connect the leads and boom! Your measurement shows up on the screen regardless of the method on measurement.