The non-invasive current sensor allows for accurate measurement of DC current up to 35 A without the need to interrupt the conductor and is compatible with LAN controllers LK3 and LK4. Thanks to the retractable halves of the sensor, it can be easily attached to the cable and quickly installed. The sensor should be powered with 3.3 V from the IDC10-1 connector and used with input INP3-4A, or for simpler use, 5 V and measurement on input INP1-2A.