Radio remote controls in hydraulic systems are devices that allow operators to control hydraulic machinery wirelessly from a distance. Instead of needing to be physically near the equipment, operators can use a handheld remote control unit to send commands to the hydraulic system via radio signals. These commands can include functions like starting or stopping the machinery, adjusting the speed or direction of hydraulic actuators, or activating specific functions. Radio remote controls provide greater flexibility and safety for operators, allowing them to control machinery from a safe distance, especially in hazardous or hard-to-reach environments.