voltage meter 1.power AC220V or DC5V,12V,24V 2.Measure Current or Voltage of AC or DC 4 Dimension 96x48x77m ... be connected is 127.) voltage meter - power supply AC220V ,DC5V,DC12V,DC24V measure DC voltagevoltage meter with RS232, RS485 can be display ... years of export experience and 12 years experience cooperation with Panasonic voltage meter with RS232, RS485 can be display the data in the screen ...