AstroAI ASIMT132A Digital Multimeter, 4000 Counts, True RMS

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Product guide

AstroAI ASIMT132A Digital Multimeter, 4000 Counts, True RMS

Counts: AstroAI’s ASIMT132A digital multimeter combines a claimed 4000-count display and True RMS measurement with auto or manual range selection. It covers several common electrical measurements, with a backlit display and data hold for reading results.

At a glance

Claims True RMS for AC current and voltage, alongside auto-ranging and manual range selection.
Listed functions include AC/DC voltage and current, resistance, continuity, capacitance, frequency, temperature and diode testing.
Backlit LCD, data hold, kickstand and low-battery indicator support reading and recording measurements.
Manufacturer information describes F500mA/600V and F10A/600V ceramic fuses and automatic shutoff after 15 minutes of inactivity.

Price

$24.29Save 41%

Reference price: ~~$40.99~~

Price checked: Nov 13, 2026

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Pros and cons

Pros

Broad set of measurements covers common electrical and troubleshooting tasks.
Backlight, data hold and kickstand can make readings easier to view and record.
Both auto and manual range selection are stated, with True RMS specified for AC current and voltage.

Technical specifications

26 specifications

Identity
Brand	AstroAI
Model	ASIMT132A
Style	DT132A
Measurement type	Multimeter, Voltmeter

Display and operation
Display counts and refresh rate	3 ¾, 3999 Sampling Speed 2 times/second
LCD size	2.17 x 1.22 in (55 x 31 mm)
Range selection	Auto or Manual
Polarity indication	“-” displayed
Overload indication	“OL” displayed
Low battery indication	Yes

Measurement ranges and accuracy
DC voltage	400 mV ±(0.8%+5); 4 V/40 V/400 V ±(0.8%+3); 600 V ±(1.0%+5)
AC voltage	400 mV ±(1.2%+5); 4 V/40 V/400 V ±(1.0%+8); 600 V ±(1.2%+5)
DC current	400 µA/4000 µA/40 mA/400 mA/4 A/10 A ±(1.2%+8)
AC current	400 µA/4000 µA/40 mA/400 mA ±(1.5%+8); 4 A/10 A ±(2.0%+10)

Power and battery
Power configuration	Battery Powered
Battery specification	3 x 1.5V, AAA battery
Auto power-off	Conserves power by automatically shutting off after 15 minutes of inactivity.

Environmental limits
Operating environment	32°F~104°F (0°C~40°C); <80% RH
Storage temperature	14°F~122°F (-10°C~50°C); <85% RH
Upper temperature rating	40 °C

Dimensions and listed weight
Dimensions listed	15.5 x 10.8 x 3.9 centimetres
Weight listed	145 g
Specification met	EN 61010-1

Other product details
Colour	Red
Compatible devices	Electrical Devices, Appliances, Electronics and Vehicles
Warranty description	3-year

What to know before buying

Listing details to confirm

Listing details conflict on weight: the product details list 145 g, while the detailed specification text says Approximately 0.49lb (223g). The title says 4000 counts, while the detailed specification describes a 3999-count display. Confirm which weight and count convention apply to the offered version. The instruction manual is a reported customer concern.

What’s in the box

Included

Who is it for?

A good fit for

DIY users and hobbyists troubleshooting household or automotive electrical issues.
Buyers seeking a handheld meter with voltage, current, resistance, continuity and additional component measurements.

Less suited to

Buyers who need confirmed weight or count details before purchase, since listing specifications differ.
Users who need a clearly documented instruction manual, given the reported dissatisfaction with it.

AstroAI ASIMT132A Digital Multimeter, 4000 Counts, True RMS · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 8,871 ratings

5 stars68%68%
4 stars22%22%
3 stars7%7%
2 stars0%0%
1 star3%3%

Customer feedback reports that the meter is easy to use and appreciated for its readings and household troubleshooting. Those impressions fit the listed auto-ranging operation, data hold and range of measurement functions, though they do not establish measurement performance. The instruction manual is a stated concern, which may matter to first-time users. Aggregate ratings are mostly five-star, but a smaller one-star portion shows that experiences are not uniformly positive.

Positive themes

Customers describe the meter as easy to use and useful for home tasks.
Customers report satisfaction with its readings and troubleshooting capability.

Negative themes

Customers express dissatisfaction with the instruction manual.

Frequently asked questions

Does this meter use True RMS?

The listing claims True RMS measurement for AC current and voltage.

What measurements does it support?

The listing describes AC/DC voltage and current, resistance, continuity, capacitance, frequency, temperature and diode testing. It also lists duty cycle and data hold.

Does the meter select ranges automatically?

Yes. The detailed specifications state auto or manual range selection.

What should I know about the listed count and weight?

The title says 4000 counts, but the detailed specifications give a 3999-count display. Product details list 145 g, while the specification text says approximately 0.49 lb (223 g). Check the offered version if these details matter.