The IULH12-1REC4-27452-1 is a Hall Effect Sensor manufactured by Sensata Technologies. It is a latch type digital sensor designed to detect the presence of a magnetic field. The device is designed to be used with either DC or AC power supply, and it can operate at voltages between 3V and 24V. It has an open drain output and is made with a SnPb plated, RoHS compliant package. This sensor is used in a variety of applications in the automotive and industrial sectors such as speed sensing, current sensing, over temperature protection, and motor control.