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产品说明：

四窗口同时显示:电压、电流、功率、功率因数/频率4 display: V, A, W, PF or Hz

电流和功率上下限可设定，超限声光报警Upper and lower limit of W and A setting, and alert with sound and light when exceed the limit.

电压量程Voltage: 10.0-500.OV

电流量程Current: 0.005 -20A

量程自动切换Auto range

精度Accuracy:±(0.4%reading+0.1 %range+1 digit)