Tested and Working. Does not come with Power Supply. This Elenco F-2800 Frequency Counter is a reliable tool for measuring frequency signals between 1Mhz and 3Ghz. It comes with an antenna and is perfect for use in a variety of settings, including business and industrial environments. The unit type is a single unit, and the country/region of manufacture is unknown. The brand of this frequency counter is Elenco, and it is sold as a unit quantity of 1. It falls under the categories of Frequency Counters, Test Meters & Detectors, Test, Measurement & Inspection, and Business & Industrial. This unit is ideal for anyone in need of a precise frequency counter and is ready to use it for their testing needs.