GS-AV1B1 series is a high precision single phase AC voltage isolation transducer and adopts the principle of electromagnetic isolation. It detects AC voltage in wire and then generates a signal proportional to that voltage. The generated signal could be 0-5V dc,0-10V dc 0-20mA,or 4-20mA. The generated signal can be then used to display the measured voltage in an ammeter, or can be stored for further analysis in a data acquisition system, or can be used for the purpose of control.