FA39 3A5070000 is a power meter with power factor, analogue display, on-panel mounting, and a frequency range of 45÷65 Hz, manufactured by the Polish company LUMEL. It is an electronic device that measures active power, reactive power, total power of the circuit, average power and total energy. The input voltage range is between 85 and 277V with a constant current of up to 1800A. It features a digital display, lighting indicators, an overload protection as well as single-phase or three-phase installations. The device can operate in wide temperature and climatic conditions, with a maximum ambient temperature of -20°C to +55°C and a maximum humidity of 90%.