The MT8631A is a 3-channel Hall-effect magnetic sensor that is housed in a small and industry-standard TO-92F (3-pin) package, with RoHS compliant construction. It is manufactured by MagnTek, a leading manufacturer of Hall-effect magnetic sensors that is based in China. The MT8631A offers precise, cost-effective, and low-power sensing solutions for various applications including proximity, level, speed, and flow detection. It senses the presence of a magnetic field and output a digital HIGH or LOW signal. The MT8631A features high sensitivity, a wide operating temperature range, a wide frequency response, and adjustable sensitivity. Additionally, it offers a high immunity to noise, and low power consumption.