AstroAI
AstroAI AM33D Digital Multimeter
The inexpensive first meter that covers every check a kit builder needs.
We earn a commission, at no extra cost to you.
Reviewed by Kerem Başbuğ · Last updated September 28, 2026 · How we rank
A Fluke meter measuring AC/DC voltage to 1000V, current to 10A, resistance, continuity, diodes, capacitance, frequency and temperature. You are paying for accuracy, safety engineering and a meter that lasts for decades.
A Fluke is the meter people stop replacing. For pure kit building it is more than you need, but if you also work on household wiring, cars or anything where a wrong reading matters, the safety engineering and accuracy are worth paying for. Buy it when the meter has become a tool you rely on rather than an occasional helper.
We earn a commission, at no extra cost to you.
Contents come from the current Amazon listing and can change — check the listing before buying.
Read the safety section of the manual once — a professional meter is only as safe as the way it is used, and the voltage ratings assume the correct sockets and leads. Keep the supplied leads rather than swapping in cheap ones, since the leads are part of the safety rating. For electronics, the capacitance and frequency modes are the features you will reach for most.
Serious hobbyists and anyone doing regular electrical work who wants a buy-once meter.
Most of the same measurements for a fraction of the price, if you only do hobby electronics.
A cheaper trade-brand meter for basic electrical and electronics checks.
AstroAI
The inexpensive first meter that covers every check a kit builder needs.
We earn a commission, at no extra cost to you.
AstroAI
Auto-ranging, True RMS and capacitance without leaving the budget bracket.
We earn a commission, at no extra cost to you.
Klein Tools
A trade-brand meter tough enough for the toolbox as well as the bench.
We earn a commission, at no extra cost to you.