"The ZSD is a hand-held enabling device for manual operation of a machine\/robotSwitch has 3 operating positions — OFF-ON-OFF. It provides safety based on normal human behavior of either releasing or squeezing the actuator in an emergency situation. The machine\/robot can be operated in the on position. Thermoplastic enclosure2 NO & 1 NC contacts Screw terminals, spiral cord grip","Safe Solutions for your Industry.Schmersal is focused on machine safety - protection for man and machine. For over 65 years Schmersal has developed a reputation for the design and manufacture of machine safeguarding switches that satisfy current safety requirements of the latest OSHA, ANSI, RIA and international standards and guidelines. Products supplied by Schmersal are used in a wide variety of applications in industries such as power presses, packaging, automotive, food and beverage, pharmaceutical, elevators, machine tools and heavy industry."