BIRD TECHNOLOGIES' (7020-1-030301) 7020 series power sensor is an economical plug and play solution to your power measurement needs. The 7020 determines and reports Forward and Reflected True Average power and VSWR over a wide frequency range of 25 MHz – 1.0 GHz. It also never requires field calibration, factory calibration suggested once per year, the sensors are traceable to National Institute of Standards and Technology (NIST). 0.5 – 500 W power measurement. USB 2.0 interface. N Female connector.