Klein Tools produces some of the most trusted digital multimeters in the industry, and two models that often get compared are the Klein MM720 and the Klein MM700.
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While both are designed for professional use, they differ in accuracy, safety ratings, and advanced features. Let’s break them down so you can decide which one fits your needs best.
🔍 Overview of the Klein MM720
The Klein MM720 is one of Klein’s higher-end auto-ranging multimeters. It’s built with True RMS capability, advanced safety ratings, and features designed for electricians who deal with complex and noisy signals.
Key Features of the MM720:
- True RMS for accurate readings on non-linear loads
- Auto-ranging with manual range override
- Measures voltage, current, resistance, capacitance, frequency, and duty cycle
- Temperature measurement with included thermocouple
- Microamp range for flame sensor testing (HVAC-friendly)
- LoZ (Low Impedance) mode to eliminate ghost voltages
- Min/Max recording function
- CAT IV 600V / CAT III 1000V safety rating
Best For: Professional electricians, HVAC technicians, and industrial engineers who need accuracy and safety in high-demand environments.
⚡ Overview of the Klein MM700
The Klein MM700 is a professional-grade True RMS multimeter that emphasizes versatility. While it doesn’t have every advanced feature of the MM720, it’s still a robust tool with excellent accuracy and a slightly more straightforward design.
Key Features of the MM700:
- True RMS for precise readings
- Measures voltage, current, resistance, frequency, duty cycle, and temperature
- Low Impedance (LoZ) mode for eliminating ghost voltages
- Min/Max/Relative measurement functions
- CAT IV 600V / CAT III 1000V safety rating
- Rugged housing with drop protection
- Wide operating temperature range
Best For: Electricians and technicians who want a reliable, full-featured multimeter at a slightly lower price point than the MM720.
📊 Side-by-Side Comparison Table
| Feature | Klein MM720 | Klein MM700 |
|---|---|---|
| True RMS | ✅ Yes | ✅ Yes |
| Auto-Ranging | ✅ Yes | ✅ Yes |
| Voltage Range | Up to 1000V | Up to 1000V |
| Current Range | 10A (with microamps) | 10A |
| LoZ Mode | ✅ Yes | ✅ Yes |
| Temperature | ✅ Yes | ✅ Yes |
| Display | High-resolution, backlit | Standard backlit |
| Safety Rating | CAT IV 600V / CAT III 1000V | CAT IV 600V / CAT III 1000V |
| Min/Max Recording | ✅ Yes | ✅ Yes |
| Flame Sensor Microamps | ✅ Yes | ❌ No |
| Durability | Rugged design | Rugged, drop-tested |
| Best For | Pros needing microamps + HVAC | General electricians, industrial work |
| 💳 Pricing | 💲 Check Price | 💲 Check Price |
✅ Pros and Cons of Each
Klein MM720 Pros:
- Microamp range for HVAC and flame sensors
- Higher display resolution
- True RMS and LoZ mode included
- CAT IV safety rating for maximum protection
Klein MM720 Cons:
- Pricier than the MM700
- Slightly bulkier design
Klein MM700 Pros:
- True RMS with LoZ for reliable results
- CAT IV / CAT III safety rating
- Rugged, professional-grade build
- Excellent value for the features
Klein MM700 Cons:
- Lacks microamp range
- Display is not as detailed as MM720
🏆 Verdict: Klein MM720 or MM700?
Both the Klein MM720 and MM700 are excellent True RMS multimeters designed for professionals.
- Choose the MM700 if you want a reliable, rugged, and affordable multimeter that covers most electrical and industrial needs.
- Choose the MM720 if you need extra precision, microamp functionality for HVAC work, and advanced features for complex troubleshooting.
👉 In short:
- MM700 = dependable and cost-effective professional tool.
- MM720 = advanced, versatile, and ideal for demanding environments.
