... meters can connect PC simultaneously. If there are four ports on the USB HUB, can connect 4 display meters, ... voltagevoltage meter with RS232, RS485 can be display the data in the screen of computer via USB ModelFull measurementResolutionAccuracyInput impedanceMax current ... only 77mm thickness, which made the meters are smaller than the other products.Among of them, the meters use 15mm high brightness ...