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.

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.

What a great meter. Easy to use & read, usb-c re-chargeable that comes with cord. Best meter I’ve used, fine leads for those tight spots. A+++. Readability & continuity beep is top notch.

Like the meter, especially the graphing, that is what i use mostly for DCV. the continuity beep is fairly loud, for 5 feet, quiet for 10 feet in a noisy shop. A separate enter and back button would make 1 hand meter selection much easier. This price point i can live with it, at least it isn't just a mode/select button. Will buy another when needed.

I personally found this to be the perfect all-around multimeter for my needs. The auto function is amazing and the screen is bright and clear. The kickstand and probe holders are a nice touch. Easy to disassemble in case you need to change either of the two fuses. The battery lasts a long time. I think this is the best multimeter for the price and features. There is a graphing function that does data plots over time, and I thought that was a cool use case which I haven't needed yet but glad to have. I wasn't asked to leave this review, but I did reach out to Fnirsi customer support for an issue and they were really helpful and resolved my issue quickly, so I am a big fan now. I have since purchased other Fnirsi products and have been really impressed with the user experience.

I've had this meter for a few months now and it still works great. It's reasonably accurate (matches my oscilloscope voltages and other equipment). Battery charge lasts a LONG time, too. Display is bright and easy to read. Great meter, especially for the price.

It works great is easy to use but it is not really a recorder, it displays a trace of the measurement but there is no adjustment. I bought it with the assumption that it will record the voltage input but it only records the measurement at a manual request I was ready to return it as it doesn't do what I need but decided to keep it because of all the other nice features it has. It also shows a good manufacturing quality.

Love this digital multimeter. Nice big display and especially like the ability to show history over time of readings. Many various options to read volts, amps, resistance, capacitance, and diodes. Easy to use and great price compared to expensive meters great value.

Muy confiable, fácil de utilizar y con muy útil analizador de voltaje de manera continua en tiempo real para verificar los cambios importantes del voltaje, incluso con parámetros manuales para establecer alarmas

Great product accurate, works very well... has its own USB chargeable battery! BIG Readably screen... really solid feeling in the hands.

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.

It’s work excellent for testing anything for the power voltage results. It worth the money to buy it for any customers know how to use it. I’am very happy with my new tester and good to have it. Thank You ! E. MAZUR

Es un gran producto de la marca FNIRSI, con un diseño que se sale de lo tradicional y con algunas funciones que no encuentra uno en los instrumentos de medición de similar precio, su construcción y materiales se ven y sienten de calidad, quizás le faltaría un poco de peso para que se sintiera más sólido, pero esto no lo demerita en nada. su interfaz es sencilla, los números de la pantalla son grandes y claros, su velocidad de respuesta es buena, el juego de puntas que trae también es muy buena calidad y son de medida estándar por si deseas cambiarlas por algunas de otro tipo, en resumen, es un buen equipo para tener en tu arsenal de herramientas de medición si eres un entusiasta de la electrónica. Lo único que siento que le falta y que me gustaría que el equipo tuviera una funda protectora de silicona o material similar que además mejoraría el agarre del equipo.