The biggest innovative breakthrough point of this product is to adopt a four-axis linkage mechanism design to adjust and realize two PAD with different specifications. The appearance of science and technology is full of professionalism. Silicone wrapping is used around the fuselage to protect the flat plate. The back panel is designed with three-stage functional partitions, camera scanning module, FRID sensing module, charging and data transmission module. Through Bluetooth connection transmission operation, it greatly improves the work efficiency of warehouse inventory work and creates indispensable value for enterprises.