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Description
MAJ MT21DMM Data Hold AC DC 600V CAT 111 DMM Data Hold AC DC 600V CAT 111 Overview The MT21 is a 600 AC DC Voltage Compact Multimeter with double moulded rubber housing and meets the International Standard IEC 61010 1 CAT lll 600V. The large LCD display screen has a white backlight for use in arduous areas. It is a very economical tester ideally suited for everyday use by electricians, electronic technicians as well as the air conditioning industry. The MT21
DMM Data Hold AC/DC 600V CAT 111
DMM Data Hold AC/DC 600V CAT 111
Overview
The MT21 is a 600 AC/DC Voltage Compact Multimeter with double moulded rubber housing and meets the International Standard IEC-61010-1 CAT lll 600V. The large LCD display screen has a white backlight for use in arduous areas. It is a very economical tester ideally suited for everyday use by electricians, electronic technicians as well as the air conditioning industry. The MT21 is a basic 2000 count multimeter and is designed to efficiently support the first level electronic and electrical trouble shooting. The meter measures AC and DC voltage to 600V, resistance to 2000 ohms, and DC current to 10A, plus has a diode test function and a continuity buzzer. An added function of the MT21 is the battery test ranges, which test 1,5V and 9V batteries with a load.
Features
- 600V AC/DC Voltage
- 10A DC Current
- Resistance to 2000k
- Battery Test 1.5V & 9V Batteries
- 2000 Count LCD Display
- Overmould Rubber Housing
- Integrated Test Lead Holder
Accessories:
- 9V Battery
- Test Leads
- Instruction Manual
Specifications
| Function | Range | Resolution | Accuracy |
| DC voltage | 200mV - 600V | 0.1mV | ± (0.8% + 2 Digits) |
| AC voltage | 200V - 600V | 0.1mV | ± (1.2% + 10 Digits) |
| DC Current | 2000μA - 10A | 1mA | ± (2.5% + 5 Digits) |
| Resistance | 200Ω - 2000kΩ | 0.1Ω | ± (1.0% + 2 Digits) |
| Pulse Width |  | 10mV | ± (1.0% + 2 Digits) |
| AC Bandwidth | 45Hz to 450Hz | ||
| Digital display | 2000 | ||
| Continuity | Yes | ||
| Diode test | Yes | ||
| Overrange indication | Yes | ||
| Battery test | 9V, 1.5V | ||
| Input impedance | >1MΩ | ||
| Enclosure | Double moulded | ||
| Low battery indication | Yes | ||
| Power source | 6LF22 | ||
| Weight | 342g | ||
| Dimensions | 187 x 81 x 51mm | ||
| Safety Specs | IEC61010-1 CAT III 600V | ||
Downloads
Additional Information
| Group | Multimeters |
| Keywords | major tech, MT21, digital multimeter, multimeter, Compact |
| Sub Group | Digital Multimeters |
| Device | Multimeter |
| Type | DMM | Data Hold |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.2 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
There’s oil in those yarn Hills!
Style: Full Synthetic High Mileage, Size: 1 qt (Pack of 1), Configuration: 5W-20
It’s great oil at a fair price. The shipping was expeditious and glad it was.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 5
Great value, cheaper than local.
Style: Full Synthetic High Mileage, Size: 5 qt (Pack of 1), Configuration: 0W-20
Good value, fast shipping, Valvoline quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
★★★★★ 4
Good buy
Style: Full Synthetic High Mileage, Size: 5 qt (Pack of 1), Configuration: 5W-20
Run of the mill oil but for a great price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
★★★★★ 5
The Excellence of Motion Preserved
Style: Full Synthetic High Mileage, Size: 1 qt (Pack of 1), Configuration: 5W-30
In the pursuit of the ideal, where reason governs and the forms of all things aspire to perfection, the Valvoline Full Synthetic High Mileage with MaxLife Technology 5W-30 Motor Oil presents itself as a manifestation of virtue within the mechanical realm. It is not merely oil, but a substance designed with foresight, sustaining the engine as the soul sustains the body. The viscosity is measured, neither excessive nor deficient, allowing parts to move in harmonious accord, reducing friction and preserving integrity.
One observes that engines treated with this oil respond with steadiness and endurance, as if guided by a rational principle, minimizing wear and extending life in a manner that reflects the pursuit of the Good. I grant it five stars, for it exemplifies a balance between strength and refinement, a practical embodiment of foresight, wisdom, and care—ensuring that motion, that vital energy, continues undisturbed, much as a well-ordered soul achieves its fullest expression through the contemplation of virtue.
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Reviewed in the United States on December 13, 2025
★★★★★ 5
Extraordinary resource
Format: Paperback, Format: Paperback
I am a Cultural History Interpreter in SC. Working at a plantation historic site to bring suppressed history to light is challenging. Prof Sinha's book gives us easily accessible documentation to counter the "Lost Cause" devotees who appear on the site almost daily.
Her writing style is clear and lucid, a trait for which I am extremely grateful. The site is including this volume in our staff library. For those just entering the field of Public History, it is indispensable. For the rest of it is a very valuable resource. Highly recommended!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2019
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