The ITECH IT9121E(G) is an advanced digital power meter that measures voltage, current, power, frequency, harmonics (up to the 50th order), and power quality. It supports up to 600 V RMS and 20 A RMS inputs with a bandwidth reaching 100 kHz. The “(G)” version includes GPIB connectivity alongside USB, RS‑232, and LAN, making it ideal for automated test environments..