LF505-S LEM current Transducer LF505-S/SP16 LEM current Transducer LF505-S/SP27 LEM current Transducer LF505-S/SP13 LEM current Transducer LF 505-S – Current Sensor 500A 1 Channel Hall Effect, Closed Loop Bidirectional Module from LEM USA Inc. Buy from Sanghvi electronics