VM-1 display with backboard set up to read AC Amps using a current transformer. Backboard has RMS converter, load resistor, and 4 wire screw terminal connections. Powered from 12vdc (24vdc option at increased cost). You must be able to solder the appropriate jumpers as described in the instruction sheet. 1000:1 (10 ohm 1/2 watt resistor) current transformer is recommended. Call Hlabs for assistance. Includes panel mounting hardware. Optional smoked lens (bezel).