The original NanoVNA v2, model: S-A-A-2, is used to measure and characterize RF components such as antennas, amplifiers, filters, attenuators, etc. It comes with stable firmware and the ability to connect to personal computers as well as charging via the included micro-USB cable.
The kit also comes with a short, open, loaded and through calibration kit (SOLT) with 4 RF cables (2 x 30 cm original + 2 x 60 cm high quality LMR200) and a set of male-female attenuators (1, 2, 3, 6, 10 and 20dB). It can measure reflection and transmission coefficients (S11 and S21) with 1,024 scan points using USB mode and NanoVNA-QT software, and 201 points when the data is displayed on the screen.