Introduction - If you have any usage issues, please Google them yourself
1. Voltage measuring range: 0- ± 2000V 2. The smallest error of 0.5V 3. The results show the four semi-numerical 4. Output data using LCD liquid crystal display 5. ICL7135 with the realization of digital conversion 6. ICL7660 produced by voltage-5V 7. the core of control parts of single-chip control, watchdog circuit does not require direct use of single-chip resources.