Combines both current transformer and transmitter.Convert  the measured current into linear signal and send it to computer or displaying devices.

High accuracy.Small in size.Low power loss.Good anti-interference ability.In order to install ampere meter in power control cabinet without adding current transformer,Series A has 2 SUB-SERIES:a1 Series(single line output;can connect to digital display instrnment only);A2 Series(dual output,can also connect to indicating meter separately).