... )The electronic tester (small white box) is write watt meter, volt meter and power meter. it has 6 types functions, you can test ... can be customize.Amperemeter,Voltmeter.powermeter,PFmeter,power consumption meter.Power Frequency meter.4.The size of LED display cases can ... :•.Voltmeter*1; Amperemeter*1•.Powermeter*2(AC,traditional)•.Power meter*2(DC, traditional)•.Master switch with fuse•.DC master ...