AC Current Sensors Connect directly to any XR440 Data Logger input channel. Also connects directly to any recorder or data acquisition system that has a 0-5vdc input. No external power required. - Split core design - Self powered - Rugged plastic housing - Output signal is accurate even at very low input current levels (below 1% of full scale). Split core construction simplifies installation on existing conductor. Nylon thumb screws, no exposed metal parts; Monitor motors, pumps, or any AC load.