
WMM-21 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $40.00 | Condition is Used, SQUARE D Multimeter WMM-21 with Protective case -Tested/Working, shipping cost = $10.15 | 100.0% |

Introducing the WMM-21 Square Multimeter, a versatile and reliable testing tool for electrical circuits. This multimeter comes fully tested and confirmed to be in excellent working condition, ready for immediate use.
The WMM-21 Square Multimeter boasts a sleek, compact design, measuring only 4.5 inches long, 3 inches wide, and 1.2 inches thick. Its square shape makes it easy to hold and maneuver in tight spaces, while its backlit LCD screen ensures clear and accurate readings, even in low-light conditions.
This multimeter offers a wide range of functions, including DC and AC voltage measurements up to 1000V, resistance and continuity testing, and diode and capacitance testing. The auto-ranging feature allows for easy and precise measurements, while the data hold function allows you to lock in readings for comparison with other measurements.
The WMM-21 Square Multimeter is built with high-quality components and is RoHS compliant, ensuring both safety and durability. Its protective rubber housing provides insulation and shock protection, making it ideal for use in various environments.
The multimeter comes with a set of test leads and a user manual, making it easy to get started with your electrical testing projects. Whether you're a seasoned electrician or just starting out, the WMM-21 Square Multimeter is an essential tool for your toolkit.
In summary, the WMM-21 Square Multimeter is a fully tested and working multimeter with a sleek design, a wide range of functions, and a protective housing. Its ease of use, accuracy, and durability make it a valuable addition to any electrical testing project.
Buying a WMM-21 Square Multimeter that has been tested and confirmed to be working comes with several advantages and disadvantages. Here are some points to consider:
Advantages:1. Guaranteed Functionality: A multimeter that has been tested and confirmed to be working saves the hassle and time of having to test it yourself or dealing with potential returns or exchanges due to defects.
2. Cost-Effective: In the long run, buying a tested and working multimeter can save you money, as you avoid the potential costs of having to repair or replace a defective one.
3. Convenience: Having a reliable multimeter on hand can come in handy for various DIY projects, electrical work, or troubleshooting electronics.
Disadvantages:1. Limited Warranty: Depending on the seller or marketplace, the warranty for a tested and working multimeter may be limited compared to buying a new one directly from the manufacturer.
2. Lack of Customization: When buying a tested and working multimeter, you may not have the same level of customization options as you would when buying a new one directly from the manufacturer.
3. Potential for Hidden Damage: While the multimeter may function properly during testing, there could be hidden damage that may not become apparent until later use.
In conclusion, buying a WMM-21 Square Multimeter that has been tested and confirmed to be working can be a cost-effective and convenient option for those who need a reliable multimeter for various projects or electrical work. However, it's important to consider the potential limitations of the warranty and the possibility of hidden damage. Ultimately, the decision to buy a tested and working multimeter depends on your specific needs, budget, and level of risk tolerance.
Recommendation: If you need a multimeter urgently and are confident in the reliability and testing process of the seller, then buying a tested and working WMM-21 Square Multimeter can be a good option. However, if you prefer a longer warranty, more customization options, or are concerned about potential hidden damage, it may be worth considering buying a new multimeter directly from the manufacturer.
Details:
Good pre-owned, tested, in good working condition with minor wear and scratches. Square multimeter WMM-21 with protective case and directions. Please see all pictures for more details. Comes with as pictured.
specifications testmultimeters:
- mpn: Wmm-21
- part type: Multimeter Case
- form factor: Handheld
- display: Digital
offer testmultimeters:
- sold #: 11
- price: $40.00
- item condition: Used
- started: november 21, 2025
- in stock #: 1
- options: ship-to-home
- availability: in stock
shipping testmultimeters:
- class: standard
- type: calculated
- service: usps ground advantage
- carrier: usps
- transit: 4-10 days
seller testmultimeters:
- rating: 100.0%
- city: duncansville, pennsylvania
- # reviews: 3902
general testmultimeters:
- category: Business & Industrial > Test, Measurement Inspection > Detectors > Multimeters
payments testmultimeters:
- credit card: mastercard
- other
- wallet: paypal
returns testmultimeters:
- paid by: seller
- method: money back
- policy: returns accepted
- time: 30 days
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