This auction is for a NEW in the BOX JOKAB SAFETY VITAL 1 'VERSION E' SAFETY MONITORING CONTROL RELAY. The Jokab Safety Vital 1 is based on a single channel safety concept where multiple safety sensors can be connected in series and monitored with a single safety controller. A dynamic signal is sent from the Vital 1 through all connected sensors, and then returned to Vital 1 which then evaluates the received signal. As each safety sensor inverts the signal, it is possible to detect short circuits or faults in any of the sensors. The Jokab Safety Vital 1 Safety Controller with 2 safety outputs, uses unique dynamic signal technology, automatic or manual supervised reset, test input for monitoring of external positive guided relays/contactors, 5 LED indicators, 1 dual purpose information output, quick release terminal blocks, 22.5mm wide, 24VDC supply. Meets safety category 4, dynamic self test. For additional manuals and datasheets see product link outlined below ~ please feel free to email your questions or requests for more information. http://www.jokabsafety.com/products/vital/vital-1