The L1+ Silicon Optical Inertial Measurement Unit is a dual-parameter silicon photonic sensing product integrating angular velocity and acceleration detection, capable of real-time sensing of both 3-axis angular velocity and 3-axis acceleration simultaneously. It has an angular velocity measurement range of ±800°/s with a full-temperature zero bias stability of ≤1°/h, and an acceleration measurement range of ±30g with a normal-temperature zero bias stability of ≤0.5mg. The product features a bandwidth of ≥400Hz and excellent scale factor performance, supporting customizable RS-422 data output with an adjustable 400Hz update rate. Powered by +5V with a steady-state power consumption of ＜6W, it measures 63×63×25mm and weighs 185±15g, with a standardized electrical interface. Combining the merits of small size, light weight and low cost, it can output comprehensive motion inertial parameters.