AstroAI Digital Multimeter, Voltmeter 1.5v/9v/12v Battery Voltage Tester Auto-Ranging/Ohmmeter/DMM with NCV Function, Accurately Measures Voltage Current Amp Resistance Capacitance

I purchased three of these AstroAI DMs and when they arrived they went straight to the lab for testing. First off, they passed the battery and DC voltage measurements. They performed well with only slight variations in voltage readings to within three hundredths of a volt. Second was direct current testing in the mA range where they also performed well. Third, was rectifier testing where all three were capable of properly measuring the voltage drop across the PN juntions. Fourth, was testing the capacitance of several cap values and types. They performed surprising well in tests ranging from 300nf to 470uf to include mylar and electrolytic caps. The accuracy of the capacitance readings exceeded expectations for twenty dollar meter. In all tests, the results were compared against bench meters and no significant deviations were found. Fifth, was resistance testing where it seemed to produce some dynamic readings to within a range rather than settle in on a specific value. The resistance testing was a mild weakness with the meters I received. So my five star rating is based upon overall performance relative to price. I'm not going to address what constitutes a solid or a flimsy plastic polymer case as that is too subjective and not worth discussing with a $20 meter. The leads seated well into the meter on all three meters. Finally the display is easy to read and the setting knob has a solid position seating feel. This meter is more than adequate for most uses but you already know that meters of this price will have some limitations.

Good price for a well configured multimeter. Has all the functions I need as a homeowner. I like the ability to check for A/C voltage without having to use the leads. it even has the ability to check capacitance so I can check the capacitor on my Air Conditioner which allows me to replace it for $12 instead of paying a technician $400.

The multimeter functions well and is simple to use for domestic applications.

Amazing product for the money. So many features at this price point. Using this at work as a spot checker for A/C voltage presence using NC feature.

Easy to use and accurate. Measures AC and DC current. Comes with batteries installed.

I need what I was looking for a long time .

Works great and is easy to use.

As good as advertised.