... amplification function. 13. Users can, according to demand, select clamp meter with 5A, 10A, 100A, 200A, 500A, 1000A, 2000A current span ... stored. 21. Equipped with hard clock directly displaying the current time and data. 22. Have RS485 interface which can read ... III. Specifications1. Class of accuracy for voltage, current, active power and active electric energy (built-in current transformer): 0.05 ...