Voltage Adaptors 9v AC - AC Reolite

We are offering a 9v ac-ac adapter can be connected to the emontx to give an ac voltage sample. This can be used to measure the ac rms voltage which in turn can be used to calculate real power, power factor, frequency and detect power flow direction. not all ac-ac adapter are the same. Variations in design, materials and construction means the output ac waveform varies between different adapters.