The machinery includes industry standard safety fencing and photo eyes. The customer is in the best position to determine whether additional safety devices are necessary for your application. In addition, Robopac does offer and encourages the use of category three safety devices, which are available to be added as options to the machine. If you believe the industry standard fencing and photo eyes do not provide adequate protection for your unique application, you should purchase the category 3 devices. These important safety issues are the sole responsibility of the customer.