A position sensor is any device that permits position measurement. It can either be an absolute position sensor or a relative one. Position sensors can be either linear or angular. Positioning Sensors are finding their way into more handheld, medical and industrial devices every day. Other current Sensors. ACS759, WCS1700, KG190, ACS715 . Where to use ACS712 Module. The ACS712 Module uses the famous ACS712 IC to measure current using the Hall Effect principle. The module gets its name from the IC (ACS712) used in the module, so for you final products use the IC directly instead of the module. Current Sensors Digital/Inductive Open loop current sensors provide digital output that changes from Vcc to 0.4 V when sensed current exceeds operation point. Not damaged by overcurrent in sensed conductor. Potential applications include robotics, telecommunication, power supplies, ground fault detectors, HVAC, and consumer tools.