Tested and Working. No power adapter. This 2.5 Ghz Frequency Counter by EXTECH comes with a case, manual, and antennas, but does not include a power cord. It is a reliable unit for measuring frequency in various applications. The unit type is a single unit, and the country/region of manufacture is unknown. This frequency counter is ideal for use in business and industrial settings, as well as in the test, measurement, and inspection field.