1. Wide range of measuring voltage can test up to 1000G (Max 2000G) insulation resistance

2. Three and a half bit LCD digital display of insulation resistance value

3. automatically shift resistance measuring range

4. environment temperature can be measured

5. self-clocking function short buzz every 15 seconds

6. automatically calculate and save R15S R60S R600S DAR and Polarization Index

7. Output short-circuit current larger than 5mA (meet fast charging request to capacitive load)

8. strong anti-interference ability stable and reliable reading

9. perfect protection safe for operation

10. powered by rechargeable Li-battery auto power off when battery energy is not enough