This black Harmony 9001K selector switch with e-cam has 2 positions and operates with a holding mechanism. It uses screw terminals and has 1 x normally closed + 1 x normally open contacts. It fits into a 30mm hole. This selector switch provides a versatile interface for controlling your machines. It installs easily into a standard 30mm diameter panel cutout and connects to control circuits using simple screw terminals. It provides an effective way to set your machine to different operating modes. Thanks to its IP66 rating, it is shockproof, dustproof, waterproof and vibration resistant, making it ideal for use in harsh environments.