... Model: YD4E-9S4Function1). Measurement: U, I, P, Q, PF, F, EP all power parameter.2). Class: active power 0.5 class; ... LED display,Intelligent PID control.4). Power impulse output; two circuits.5). Standard RS485 communication interface, support Modbus-RTU ... 100V,AC 400VOverloadingContinuance:1.2 times; Instantaneous: Voltage 2 times (10S)Power consumption<1VA(each phase)CurrentImpedance>300kΩRated ...