# AstroAI CM4K0R Digital Clamp Meter, 4000 Counts, TRMS with NCV

Counts: AstroAI CM4K0R is a 4000-count digital clamp meter with TRMS and non-contact voltage detection. It combines clamp-based current checks with test-lead measurements for a range of electrical tests, plus a backlit display and flashlight for dim work areas.

- [Original product page](https://loonieperks.com/product/astroai-cm4k0r-4000-count-digital-clamp-meter)
- [View offer](https://loonieperks.com/visit/astroai-cm4k0r-4000-count-digital-clamp-meter)
- Market: CA
- Language: en-CA
- Currency: CAD
- Brand: AstroAI
- Model: CM4K0R
- Category: Tools & Garden > Hand Tools
- Price: 43.99 CAD
- Previous price: 72.99 CAD
- Discount: 40%
- Price checked: 2026-11-12T20:34:28.837Z
- Rating: 4.4 / 5
- Reviews: 3253

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- The clamp measures current around an individual conductor without opening or interrupting the circuit.
- Test leads are used for voltage and other multimeter measurements. The jaw is for current measurement only.
- NCV detection signals sensed AC with sound and light indicators.
- Data Hold, Max/Min, continuity buzzer, backlight and flashlight support routine troubleshooting.

## Pros

- Combines clamp current measurement with test-lead multimeter functions including voltage, resistance, capacitance and frequency.
- Backlit LCD and flashlight are useful in poorly lit work areas.
- The stated kit includes test leads, a storage bag and a user manual.

## Specifications

### Identity
- Brand: AstroAI
- Model: CM4K0R
- Measurement type: Multimeter
- Display count: 4000 counts
### Measurement and ratings
- Measurement functions: Measures AC/DC Current & Voltage, Resistance, Capacitance, Frequency, Continuity, Diode, Live Wire Test
- TRMS: TRMS
- Non-contact voltage testing: Non-contact voltage testing with sound and light alarms
- Overvoltage category: Overvoltage category III 600V
- Power configuration: AC/DC
### Power and battery
- Batteries required: 2 AAA batteries required.
- Battery inclusion claim: 1.5V AAA Batteries x 2 Included
### Dimensions and installation
- Dimensions listed: 6.9 x 2.8 x 19.6 centimetres
- Weight listed: Approx. 205g
### Functions and controls
- Additional functions: Data Hold, Max/Min, Auto power off after 15 minutes inactivity, low battery indicator and continuity buzzer
- Range selection: Auto and Manual
- Display and work lighting: LCD Backlit Screen and Flashlight
- Zero function: ZERO function decreases the data error influenced by the Earth’s magnetic field, and helps you to obtain a more accurate measurement.

## Before you buy

- For clamp current readings, clamp around one wire, centre it in the jaw and do not clamp the whole power cord. Use the test leads for voltage measurements and select the appropriate mode.
- Listing details are inconsistent or unconfirmed: dimensions are given as both 6.9 x 2.8 x 19.6 centimetres and 195x68x29mm, and weight as both 399 g and Approx. 205g. The listing also gives both a 3 ¾ display description and 4000-count style. Battery requirements are stated as 2 AAA batteries required, while another specification says two AAA batteries are included. Confirm the selected listing details before purchase.

## In the box

- Clamp multimeter (Included)
- Test leads (Included)
- Storage bag (Included)
- User manual (Included)
- 2 AAA batteries (Check selected pack): One specification says two AAA batteries are included, while another says two are required.

## A good fit for

- Home or general electrical troubleshooting where clamp current readings and test-lead measurements are both useful.
- Buyers who want NCV alerts and a backlit display with a work light for dim areas.

## Less suited to

- Buyers who need a clearly reconciled dimension, weight or battery-inclusion specification before purchase.
- Work requiring measurements beyond the stated CAT III 600V rating.

## Customer feedback

Customer feedback is generally positive about accuracy, usefulness and perceived value, with durability described as mixed. That may matter for frequent or demanding use. The meter's listed functions cover varied electrical checks, but feedback does not establish measurement performance or long-term reliability.
- Positive themes: Customers report positive impressions of accuracy and value for money.
- Positive themes: Customers describe the feature set and functionality positively.
- Mixed feedback: Customer feedback on durability is mixed.

## Frequently asked questions

### Can the clamp jaw measure voltage?
No. The listing says the jaw is for current measurement only. Use the test leads for voltage measurements.
### What does the NCV function do?
It provides non-contact voltage sensing with sound and light alarms. The listing describes different light and beep behaviour for weak and strong AC signals.
### What comes in the package?
The manufacturer contents list names the clamp multimeter, test leads, storage bag and user manual. Battery inclusion is inconsistent in the listing, so confirm it with the selected offer.
### What should I know about its dimensions and weight?
The listing provides conflicting dimensions and weights. See the listing-details note and confirm the specific configuration before buying.

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## Images

![AstroAI CM4K0R Digital Clamp Meter, 4000 Counts, TRMS with NCV — 1](https://loonieperks.com/i/KdQ6imylNGBiMes9a9pAPcROO_8C2r_NqUSnQTbb4QfNrCf25XjKkuvM3ikMWZuLi80fM-b3OqkTIMYcdNZGPICZ5HzEnyFU9UrMOVcRfFeUHibBu9ds.jpg)

![AstroAI CM4K0R Digital Clamp Meter, 4000 Counts, TRMS with NCV — 2](https://loonieperks.com/i/LzJZSrR5K9T0321KfX8P5xdpyyqo5--bE0F2w8nDuULpAoPsb0IvU1tP1SgRSkgZhLmrnLxNvRwI0AetDQHlUry81EyGbQhzF2JAfsOdbNy9T2HFJJCK.jpg)

![AstroAI CM4K0R Digital Clamp Meter, 4000 Counts, TRMS with NCV — 3](https://loonieperks.com/i/241DcaWh23LxTqEVXhs3HqdTl5Jegi4nvmp8nENqLbrd7zvwOprapEX5R-94GXXyfWHf3knNxfqAlYO5lBtj0A_P6x4M9HOeMMusfrvduRyMgSc2HxHy.jpg)

![AstroAI CM4K0R Digital Clamp Meter, 4000 Counts, TRMS with NCV — 4](https://loonieperks.com/i/pSiAIiuq3_KSHIUQnsV4EWDM8rN-WSPpCl2UyrQQgDpnDw1tNRrEIs7V3jUbzcmH4xhiCSXfIfWmLS0EMgk0AbtSztfFlokvdpYpyuh8wilnnK0mIjxi.jpg)

![AstroAI CM4K0R Digital Clamp Meter, 4000 Counts, TRMS with NCV — 5](https://loonieperks.com/i/UeV1TlX7L68AabDc04ndc3Wlb8JHP7--0hlSN2mFTk6zuI2Rcl3aeGs550_h070YPAq9hJ2cCs6eZzjls8PvVyuzFpLQsyATmde7jLKUGPC8eNMK8wCh.jpg)

![AstroAI CM4K0R Digital Clamp Meter, 4000 Counts, TRMS with NCV — 6](https://loonieperks.com/i/gxFt5_eZD--76a_wewSaHPJVrumBw0U0Paw5QppQ2rDVPXSDY0yF4e0vE_GtmYKFP7MeOJfeOeLGHBGbVqdFKiy0zLzsdttbNzmNcY6vBXg4ydgwZjG-.jpg)

![AstroAI CM4K0R Digital Clamp Meter, 4000 Counts, TRMS with NCV — 7](https://loonieperks.com/i/3qc62neQFzws3jpCus5pudJB5ucWsswi2JeBn2O_LT94mv-SNB0jU6DL-PuOh3ZktPJqMylpzhSvR03EIz1jWur4Hox0tYxrZ_2PvLTt8Q18a_dVObX_.jpg)