The ImmersionRC RF Power Meter v2 finally puts ACCURATE power measurement within reach of hobbyists. This tool is essential for anybody running FPV drone races. Or if you're just a nerd who likes testing video transmitters and other types of radios.
The v2 power meter beats the v1 in several ways. It's smaller. it has a built-in battery. It has a few new modes. And it's CALIBRATED from the factory to be ACCURATE, including a build-in load resistor, which was a source of serious inaccuracy in the v1 meter.