This AN8721PV3(F) series AC/DC power analyzer adopts STM32 controller as the core and supplemented by FPGA, using direct sampling and intelligent identification technology, widely used in electrical measurements of single-phase electrical equipment, such as voltage, current, power, power factor, frequency, electrical energy, time etc., wide range, 4-window LED highlight, simple operation, U disk read/write, serial communication, parameter alarm, voltage/current ratio settings and other functions, multi-purpose, accurate and durable. Features: AC/DC universal wide-range, DC ~ 4kHz bandwidth, load adaptability; Reliable, stable, compact, light; High measurement speed, up to 0.25s refresh rate; Voltage/current ratio setting, easy expansion; Voltage, current, power over-limit sound and light alarm, quick identification of abnormal products; Standard RS-232 or RS-485 serial port, MODBUS communication, test automation; Optional digital I/O, remote input and alarm signal output. Applications: Strict industrial site type test; High temperature aging room test; Home appliances, commercial appliances line standby power measurement; Power tools test; Lighting test.