Broad compact toolkit
Temperature, capacitance, frequency and current fit into a 260 g meter.
Extech
EX330 12-Function Mini Multimeter with NCV
A compact 4,000-count autoranging meter with temperature and non-contact voltage detection, but average-responding AC rather than True RMS.
- Score
- 7.0/10
- Est. life
- 8 yrs
- Cover
- 2 yrs
Last-known catalog price
$74.99
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Product Overview
Extech's EX330 is a small general-purpose autoranging meter with a 4,000-count display and a built-in 100-600 V AC non-contact detector. It measures AC/DC voltage and current, resistance, capacitance, frequency, duty cycle, diode, continuity and temperature. The rubber holster incorporates a stand, ...
$74.99
In Stock
Specifications
- OverviewBrand
- Extech
- OverviewProduct category
- multimeters-and-electrical-testers
- OverviewExpected lifespan
- 8 years · We Buy It For Life editorial estimate
- Warranty & ServiceWarranty
- 24 months · Warranty
- Additional detailsAC sensing
- Average responding; not True RMS
Why We Love It
The features that make this product stand out from the competition.
Clear certification ceiling
The official page publishes CE/UL status and explicit CAT II/CAT III limits.
Low replacement cost
Standard AAA batteries and a two-year warranty keep entry and upkeep costs modest.
Detailed Quality Score Breakdown
Core Performance
Primary Performance
8.8
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Feature Richness
7.4
Extech documents 12 functions including temperature, frequency, duty cycle, capacitance and NCV.
Build Quality
8.1
The exact page identifies a rubber holster, CE/UL certifications and CAT III 600 V protection.
Reliability Score
8.3
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Longevity
Durability Rating
8.0
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Wear Resistance
7.1
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Component Replaceability
4.5
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Design Timelessness
7.4
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Serviceability
Repairability
4.3
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Spare Parts Availability
5.5
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Warranty Coverage
6.4
Extech specifies a two-year warranty for the EX330.
Service Network
6.9
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Value
Total Cost of Ownership
7.9
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Resale Value Retention
6.5
AI-assisted preliminary estimate pending editor review and durable-source evidence.
User Satisfaction
8.2
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Total Cost of Ownership Calculator
The sticker price is just the beginning. Use this tool to estimate the true long-term cost of this product. Adjust the sliders based on your expected usage and care to see how the value holds up over time.
Buy box purchase price$74.99
Based on your estimates, the true cost is:
$0.66 / month
$7.94
Per Year
$63.49
Over 8 years
Calculation: (Purchase Price + Total Maintenance - Resale Value) ÷ Lifespan
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Observed US merchant prices in USD.
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Sign in to view price historyFrequently Asked Questions
Is the Extech EX330 a True RMS multimeter?
No. The EX330 is listed as average-responding for AC rather than True RMS. Its published product description therefore should not be read as a True RMS specification.
What electrical safety category and certifications does the EX330 have?
Extech lists the EX330 at CAT II 1000 V and CAT III 600 V, with CE and UL certifications. These are the manufacturer’s published safety-category and certification details for this model.
How large and heavy is the Extech EX330?
The manufacturer lists dimensions of 147 × 76 × 42 mm (5.7 × 2.9 × 1.6 inches) and a weight of 260 g (9 oz). Those figures are the published specifications to use when checking storage or tool-bag fit.
What batteries power the Extech EX330?
The EX330 uses two AAA 1.5 V batteries, according to Extech’s additional specifications. The product overview also states that two AAA batteries are included with the meter, matching the listed power source and supplied battery count.
What warranty does Extech list for the EX330?
Extech lists a two-year warranty for the EX330 in its product specifications. The FAQ represents that published coverage duration without adding warranty conditions that the product page does not state.
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