Safety controllers are intended to turn off power to a hazard when necessary and keep an eye on other safety equipment. Reducing wiring and footprint can be accomplished by increasing the number of safety inputs and outputs. Devices that adhere to international safety standards are called safety controllers.

Safety controllers turn off the electricity to a hazard based on signals from safety equipment like safety interlock switches and safety light curtains. This comprises conveyor systems, robotics, and processing equipment. A hazard's beginning and operation are likewise disabled by these devices until a safe condition has been established. When there is an internal issue, safety controllers use a self-diagnostic feature to find the issue and disable the safety outputs.