What the maker puts in writing
- “IEC Rated CAT III 600V, CE and RoHS certified”
- “Anti-Burn with double fuses. This multimeter has overload protection on all ranges”
- “can test AC/DC Voltage, DC current (Can not for AC current), Resistance, Continuity, Diode Measurement”
- “Data hold function, backlight function”
- “included with 2 AAA batteries (pre-installed), comes with a carrying case and 2 decent cable leads”
- “Please make sure the rotary switch is located at the right test range” — so the ranging is manual
- $11.89
NO count. NO true-RMS. No resistance ceiling. No ampere figure.
A twelve-dollar meter is the one with a category
Which says something about the other three.
“The specification to read first is the measurement category the manufacturer
states — CAT II, III or IV, each with a voltage.”
This listing: IEC rated CAT III 600 V.
The MM325 at $29.98: no category. The MM450 at $74.50: a category for the CAPS on
its leads. The Actron at $10.99: no category.
Publishing one costs a sentence. Three of four did not spend it.
And the only one that mentions its fuses
“Anti-Burn with double fuses. This multimeter has overload protection on all
ranges.”
This shelf’s introduction compares five things, and input protection is the fifth.
This site sells a shelf of multimeter fuses — the American parts run to
10 × 38 mm (0.39 × 1.50 in) at 1000 V.
Three of these four meters never say they have any.
It tells you what it cannot do
In its own second bullet: “DC current (Can not for AC current).”
That is a real limit, printed where a buyer sees it rather than left to be
discovered on a motor circuit.
Three of these four meters cannot read alternating current. This is the
only one that says so in words.
Not the KAIWEETS already on this shelf
Which is worth stating plainly, because the brand appears twice.
The published KAIWEETS is reference B07SHLS639: true RMS, auto-ranging, 6,000
counts, lit input jacks, non-contact detection with an alarm.
This is the KM100, reference B08CX9W7G3: manual ranging, no true-RMS, no count,
no AC current.
Same brand. Different instruments. The reference number is the only thing that
tells you which.
What twelve dollars does not buy
No count, so the display resolution is unstated.
No resistance ceiling, where the MM325 publishes 2 MΩ, the MM450 50 MΩ and the
published coczow 20 MΩ.
No ampere figure for the DC current it does measure.
No drop rating and no ingress rating.
Availability
On sale at around 12 € on the American Amazon store at the time of checking.
Prices and availability are what Keepa reported on the date this page was updated; both move.
Prices quoted in this text were read on 8 October 2026. The live price is at the top of the page.
