The PMC-690A is the most advanced and user-friendly Power Quality Analyzer for performing not only ad-hoc real-time monitoring and accurate data recording but also sophisticated Power Quality diagnosis and investigation at site as it combine Class 0.1 accuracy and optimal PQ functions in a Portable, Lightweight and handheld form factor, standard equipped with a 11'' Android Tablet with pre-installed and fully functional App for viewing RMS data, Waveforms and recorded Logs as well as configurations setup. The PMC-690A complies with standards as IEC 62053-22 Class 0.5S, IEC 61000-4-30 Ed. 3.1 Class A, IEC 61000-4-15, IEC 61000-4-7, EN 50160, IEEE Std 519-2022. Furthermore, the PMC-690A comes with 4xAC/DC Voltage Channel and 4xCurrent (3xAC + 1xAC/DC) Channel, dual 10/100/1000BaseT Ethernet ports, 1xBuilt-in full band 4G LTE modem and 1x802.11n Wi-Fi Module for Station and Access Point modes to connect with Internet or the tablet. In addition, it offers 2xDI, 1xSS Pulse Output and 1xAUX Analog DC Input for 2xD