Technical specifications:

1. Screen: 4.3-inch color LCD with high brightness and ultra-clear display: display pixels: 480*272.

2. Display range: four digits display the resistance value.

3. Test parameters: insulation resistance and micro current;

4. Range: Seven-gear range, manual or automatic mode.

5. Basic accuracy: 10k-10t (I > 10na 2% I < 10na 5% I < 10na 10%)

6. Measuring range of insulation resistance: CH2683A: 10kΩ ~ 10T Ω; The resolution is 0.1× 10kΩ ~ 0.1× 10TΩ.CH2683B： 10KΩ ～ 5TΩ ； The resolution is 0.1× 10kΩ ~ 0.1× 10TΩ.Resistivity: 1.0× 10k ~ 1.0× 10TΩ-m, resolution: 0.1× 1000 ~ 0.1× 10TΩ-m.

7. Test voltage range: 0.5V～1000V

8. Test speed: fast: 12 times per second; Slow speed: 5 times/second.

9. Test terminal: 3-terminal shield and external shield ground terminal.