The Cmos Omnipolar hall switch is made from mixed signal CMOS technology. This is accessible with several advanced chopper-stabilization techniques. In addition, these provide stable as well as accurate magnetic switch points. In addition, it has a lid close sensor that finds utility in many battery powered devices. Cmos Omnipolar hall switch is also suited for reed switch replacement and exhibits efficiency in the low duty cycle applications. It has high sensitivity for the applications of undeviating reed switch replacement.