The Metrel A 1111 with 3-Phase Adapter is a wattmeter device used in the testing and inspection of electrical systems. It is a digital device housed in a robust and compact housing with an LCD display. Features include up to 3-phase measurements, direct connection with current clamps, advanced phase recognition, selectable default configurations, graphical history display, USB communication for control and data download, and an auto-start and auto-stop measurement feature. The device also includes a built-in RS232 port, enabling comprehensive computer control. The A 1111 has been certified to EN, IEC, and SAC standards and is suitable for use in a variety of electrical, electronic, and telecommunications applications.