Multiple light beam safety devices

Multiple light beam safety devices are electro-sensitive protective devices with two or more light beams. If one or more of the light beams is interrupted, a deactivation signal is sent to the machine so that any dangerous state on a machine or system can be stopped. A system consists of a sender and a receiver. In active/passive systems, the sender and receiver are located in a housing unit while a deflection unit on the passive side provides beam deflection.