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Compact red multimeter with backlit display and test leads

AstroAI MUS4KRD Smart Multimeter 4000 Counts

SKU CH-CMJ1-SMSD6

A pocket-sized smart multimeter with 4000-count display, auto-ranging AC/DC voltage, resistance, continuity, NCV detection, backlit screen and built-in flashlight

  • Team affiliation1 Piece
  • Key featuresUser Manual, Pair of Test Leads, Storage Bag, Multimeter, Ba
  • Overall height12.2 L x 6.2 W x 3 H centimeters
  • Overall width12.2 L x 6.2 W x 3 H centimeters
  • Overall length12.2 L x 6.2 W x 3 H centimeters
  • Product weight240 g
  • Auto-ranging detects AC/DC voltage, resistance, continuity without manual dial changes
  • NCV function gives audible and visual alerts for live wires without probe contact
  • Pocket-sized at 12.2 x 6.2 x 3 cm and 240 g for easy carry
  • Backlit display, built-in flashlight, data hold and auto shut-off aid low-light work
  • Includes test leads, 2 x 1.5 V AAA batteries, storage bag and manual

AstroAI MUS4KRD Smart Multimeter 4000 Counts

This compact digital multimeter offers a 4000 count display and smart auto-ranging that automatically detects AC/DC voltage, resistance and continuity. It includes non-contact voltage detection with audible and visual alarms, a backlit display, built-in flashlight and data hold function. The tool ships with test leads, two AAA batteries, a storage bag and a user manual. Its pocket-sized ABS case weighs 240 grams and measures 12.2 x 6.2 x 3 centimeters.

Who This Suits

The smart auto-ranging removes the need for manual dial selection, making it practical for DIY enthusiasts, electricians and engineers who want faster, safer troubleshooting. The NCV function helps identify live circuits without probes. The included bag keeps leads and meter organised for on-the-go work. Buyers who need current or capacitance measurements should look at a different instrument.

4000 Count Maximum Display

The 4000 count maximum display defines the resolution ceiling for every reading this meter can produce. Auto-ranging covers voltage, resistance and continuity, but the count limit fixes the finest granularity you will see. If your tasks demand higher resolution or additional measurement modes such as current, capacitance or temperature, this specification makes the MUS4KRD the wrong choice.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $23.99
Cheaper than about 67% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameAstroAI
Size & build
Overall height12.2 L x 6.2 W x 3 H centimeters
Overall width12.2 L x 6.2 W x 3 H centimeters
Overall length12.2 L x 6.2 W x 3 H centimeters
Product weight240 g
More details
Team affiliation1 Piece

Questions about this item

Will the 4000-count display and auto-ranging work reliably with older 1.5 V AAA cells I already keep in my toolbox?

The meter ships with 2 × 1.5 V AAA batteries and a low-battery indicator, so you can verify fresh cells before trusting the 4000-count auto-ranging readings.

How do I confirm the NCV alert and backlit LCD are functioning correctly after I unpack the MUS4KRD?

Power the unit on, bring the tip near a known live conductor to trigger the audible and visual NCV alarm, then press the backlight button to verify the display illuminates.

Does the package include the test leads and storage bag shown in photos, or must I purchase them separately?

The box contains the multimeter, 2 × 1.5 V AAA batteries, a pair of test leads, a storage bag, and a user manual — no extra accessories are required.

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