This document is the user manual of the EWD-RLG-SJ3 series intelligent elevator weighing device from Xi'an East Electric Co., Ltd. The device is suitable for fixed bottom elevators and has features such as self-learning and parameter adjustment. The user manual provides detailed information on the appearance, installation methods, working principles, controller appearance, sensor appearance, system controller interface instructions, system debugging methods, working parameter adjustment methods, system operation code explanations, and other operation and fault code explanations.