• Heavy-duty, true RMS clamp meter
• Includes flexible probe attachment (3000A AC)
• 50,000-count LCD display
• 1.9" jaw opening (48mm)
• Testing functions include AC/DC voltage, resistance, continuity, diode test, capacitance, frequency, duty cycle and temperature

The Techni-Pro TNP477 is a heavy-duty, true RMS clamp meter with a flexible probe attachment. It features a 1.9" jaw opening, a 50,000 count display, as well as a built-in flashlight and non-contact voltage detection.

The easy-to-use, flexible probe attachment enables current measurement up to 3000A AC and is ideal for use in hard-to-reach places. Maximum inputs on the meter itself are 1000V and 1000A AC/DC.

Additional features include inrush current, peak hold, data hold, and a min/max recording mode.

The Techni-Pro TNP477 offers a high level of performance, combined with significant savings. The chart below outlines a brief comparison of the TNP477 and other popular clamp meters.

1. Current Clamp

2. Non-Contact AC Voltage Indicator Light

3. Clamp Trigger

4. Flashlight Button

5. Rotary Function Switch

6. Data Hold/Backlight Button

7. MODE Select Button

8. PEAK/INRUSH Button

9. Relative/Hz Button

10. MAX/MIN Button

11. LCD Display

12. 3000A AC Input Jack

13. COM Input Jack

14. Positive Input Jack

1. Bluetooth

2. Auto Power Off

3. Units of Measure List

4. Direct Current

5. Negative Reading Display

6. Alternating Current

7. Low Battery

8. Measurement Display Digits

9. Analog bar graph

10. Auto range mode

11. Data hold

12. Peak Max

13. Peak Min

14. Relative mode

15. DC zero

16. Inrush current 

This meter features Bluetooth connectivity and can communicate wirelessly with the free Techni Pro iOS app. While using the app, it is possible to send data directly from the meter to your device, as well as store measurements and much more. Saved data can also be renamed for easier future reference.