... meter calibration device 2. Able to check 48 different wrong wiring connection for P3 3. Certificate: ISO 9001; Field ... ) Large color LCD, friendly user's interface, display vector diagram and wiring connection results, check 48 kinds of different wrong ... - 21 times) at worksite, display harmonic data and waveform diagram directly7) Supports bar code reading, automatic interprets the code8) Automatic ...