A1344 Hall Effect Sensor

From the shop's description

A Hall effect latch works like a switch. It will latch on when the magnet is near the sensor (south pole). It will turn off if the opposite magnet pole (north pole) is applied. Features 3.5V to 24V DC operation voltage Low current consumption Temperature compensation Wide operating voltage range Open-Collector pre-driver 50mA maximum sinking output current Reverse polarity protection