CH443TB with TO-92S Hall Sensor ROHS is a type of Hall Effect switch manufactured by Cosemitech. It is a reliable high-performance, small-sized, low-cost programmable Hall effect switch. It is designed for switching between two different outputs in response to changes in magnetic field. The device is composed of a temperature compensated hall sensor, oscillator, comparator, and open drain output. It is RoHS compliant and has an operating temperature range of -40°C to 125°C. The device features low power consumption and is capable of detecting very low magnetic fields. It is ideal for use in a variety of applications, including keyless entry systems, secure locks, and automotive applications.