1. Trend capture function: can be a long time to monitor and record the signal change process and form a trend chart for comparison 2. Higher extended storage 2000 recorded data. 3. Data filtering function: can set upper and lower values of any gear and the measured object is compared, and there is a overproof alarm. 4. Provide more data, multiple readings can be displayed on the screen 5. Double temperature measurement: intuitive and real-time temperature contrast, improve work efficiency 6. Low pass filtering: can be used for the measurement of inverter and motor drives 7. IP65 waterproof, dust should be used for: humid environment and dusty environment. 8. Powered by Li-ion: 2200mAh long endurance capacity do not replace the battery to save the cost of the purchase of battery 9. True RMS 10. 100KHZ AC frequency response 11. 0.025% basic DC accuracy 12. Peak hold function can record fast to 250us transient 13. USB data transmission 14. Design meet IEC EN61010-1 CAT IV 600V/CAT III 1000V over voltage protection, EN61010-2-030 pollution level 2 and double insulation safety etc; wider application range; measurement is more secure, to ensure the safety of personnel and instrumentation.