This is suitable to install in AC Power line to monitor AC voltage , to see the current voltage setup and real time monitoring.

Technical information:

- No Need Power Supply  !!! you can connect 2 wiring to AC lines.

- 100- 500V  AC voltage range to monitor.

- 3 Seven Segment in Red.

- Front Panel Size 7cm x 4.1cm

- RW1 Pot Variable is to adjustment and calibration the measurement with AC Digital Multimeter.