When shopping for a reliable multimeter, two names often come up: Extech and Fluke. The Extech EX330 is a compact budget-friendly multimeter that appeals to DIYers and hobbyists, while the Fluke 117 is a professional-grade tool trusted by electricians worldwide. Both are good in their own right, but they serve different users. Let’s compare them head-to-head.
📊 Side-by-Side Comparison Table
| Feature | Extech EX330 | Fluke 117 |
|---|---|---|
| True RMS | ❌ No | ✅ Yes |
| Auto-Ranging | ✅ Yes | ✅ Yes |
| Voltage Range | Up to 600V | Up to 600V |
| Current Range | 10A | 10A |
| Temperature | ✅ Yes (thermocouple) | ❌ No |
| Non-Contact Voltage | ✅ Yes | ✅ Yes (VoltAlert) |
| LoZ Mode | ❌ No | ✅ Yes |
| Display | Basic LCD | Backlit LCD |
| Safety Rating | CAT III 600V | CAT III 600V |
| Build Quality | Lightweight plastic | Rugged, professional build |
| Best For | Hobbyists, DIY users | Professional electricians |
🔍 Overview of the Extech EX330
The Extech EX330 is a feature-packed, affordable multimeter designed with beginners and light-duty users in mind. Despite its low price, it includes functions that make it versatile for many household and hobbyist applications.
Key Features:
- Measures AC/DC voltage, current, resistance, frequency, and duty cycle
- True RMS: ❌ No (basic averaging meter)
- Temperature measurement with Type K thermocouple
- Built-in non-contact voltage detector
- Compact, lightweight design
- Auto-ranging and manual ranging options
- CAT III 600V safety rating
Best For: Beginners, DIYers, and electronics hobbyists who need an inexpensive multimeter with a wide range of functions.
⚡ Overview of the Fluke 117
The Fluke 117 is one of the most popular multimeters in the professional market. Known for its durability, safety, and accuracy, it is widely used by electricians in residential, commercial, and light industrial settings.
Key Features:
- True RMS for accurate readings on non-linear loads
- AutoVolt automatic AC/DC voltage selection
- VoltAlert non-contact voltage detection
- LoZ (Low Impedance) mode to eliminate ghost voltages
- Measures voltage, current (up to 10A), resistance, frequency, and capacitance
- Backlit display for low-light conditions
- Compact, ergonomic design
- CAT III 600V safety rating
Best For: Professional electricians who need a compact, reliable, and highly accurate tool for daily use.
✅ Pros and Cons of Each
Extech EX330 Pros:
- Affordable price
- Compact and lightweight
- Includes temperature measurement
- Non-contact voltage detection
Extech EX330 Cons:
- Not True RMS (less accurate on complex signals)
- Build quality is not as rugged as professional meters
- Basic display with no backlight
Fluke 117 Pros:
- True RMS for accuracy
- LoZ mode removes ghost voltages
- Compact, ergonomic design
- Backlit display for low-light conditions
- Superior build quality and durability
Fluke 117 Cons:
- More expensive than EX330
- Does not measure temperature
🏆 Verdict: Extech EX330 or Fluke 117?
The choice between the Extech EX330 and the Fluke 117 comes down to your use case.
- If you’re a DIYer, hobbyist, or beginner looking for a cost-effective multimeter with temperature measurement, the Extech EX330 offers great value.
- If you’re a professional electrician who needs accuracy, durability, and safety in daily work, the Fluke 117 is the clear winner.
👉 In short:
- Extech EX330 = Budget-friendly and versatile for light use.
- Fluke 117 = Professional-grade accuracy and reliability.