The DIRIS A-40 multifunction meter is equipped with 3 inputs and 2 outputs, as well as RS485 Modbus communication. It has an auxiliary supply of 110/400VAC or 120/300VDC at 50/60Hz. The meter has an accuracy class of 0.2 according to IEC61557-12, but it can achieve a class of 0.5 when used with TE, TF, or iTR sensors, and a class of 1 when used with TR sensors. This meter is designed for single circuit metering and measurement, with 3CT inputs. It can perform multi-measurements including currents, voltages, frequency, powers, and power factors. The meter also offers various metering options such as active energy, reactive energy, apparent power, multi-tariff, and hour meter. To assist with configuration and ensure accurate readings, the meter features error detection and correction capabilities. It is designed for panel mounting and has dimensions of 98x98mm.