While it is theoretically possible to use a manual lever as a substitute for an electric control panel in a lifting system, it is not advisable. Manual levers lack the precision, safety features, and control capabilities of electric control panels. They also cannot provide the same level of feedback or automation. Electric control panels are designed to ensure safe and efficient operation, with features like emergency stop buttons, overload protection, and remote monitoring. Manual levers can pose safety risks and may not meet the operational requirements of modern lifting systems.