Easily find the STI Stopper Station push button in a dark corridor. Choose to illuminate as a status light (always on) or select a color change when activated (i.e. glows green then red when activated). Optional 12-24 volt LED insert illuminates red, green, or white. The ADA Compliant, multipurpose Stopper Station push button covers a wide range of applications. Buttons are Listed to UL and cUL standards, ADA Compliant.