The MCP39F501 power monitor demonstration board is a fully functional single-phase power monitor. This low-cost design does not use any transformers and requires few external components. The device calculates active power, reactive power, RMS current, RMS voltage, power factor, line frequency, and other typical power quantities as defined in the MCP39F501 data sheet. The MCP39F501 power monitor utility software is used to calibrate and monitor the system, and can be used to create custom calibration setups. For some accuracy requirements, only a single point calibration may be needed.