The new SMS Safety Muting System is a rapidly installable complete system solution for differentiating between persons and material insertion at dangerous machines. Category 2 or 4 safety devices and optoelectronic muting sensors, in conjunction with special evaluation electronics, form the basis of all muting applications. The devices are mounted on a stable and height-adjustable carrier profile and completely wired up. Assembly, adjustment and commissioning can thus be carried out with time- and cost-savings. Suitable mountings and optional protective equipment round out the versatility of this all-in-one solution for muting access protection.