Regarding the safety grating, do not have a problem with the controller

Frequently, customers ask whether the safety grating has a controller. It does not need to be equipped with a controller. There is no uniform answer to this question. It is necessary to answer the specific situation. Simply speaking, it is to see where you are using the machine. 24V and PLC.
    All (regardless of brand and whether imported) safety gratings work at DC12-24V, most of which are transistor outputs (NPN or PNP), a small part is the relay output, the relay output is either equipped with a controller, or There are small relays inside the grating, and the actual principle is still the same. The transistor output is directly controllable by the PLC or relay.
   Therefore, for an automation device with PLC, the grating itself can be directly controlled, and no controller is needed. For safety equipment with no PLC and DC 24V, this best option controller is more convenient and simple to use.