1. LCD,measuring volt,amp,watt,var,va,Hz, ... PT ratio programmable ØNew appearance and design Large LCD display and button, replace AI capacitor by Tam capacitor ... of error phase sequence input, PMAC770 will display on LCD ØReal-time measurement True-RMS measuring parameters includes: ... Harmonic1.0%Unbalance rate1.0% multifunction power meter PMAC770 Multifunction Power Meter / Panel Meter / Energy Meter