This reference design demonstrates the use of the AWR6843AOP: a 60-GHz single-chip mmWave sensor with integrated antenna. The sensor also has an integrated DSP: MCU: and a hardware accelerator for fast Fourier transform (FFT) processing.The AWR6843AOP sensor can help developers address a wide range of in-cabin sensing applications: including use cases like detection of a child across two rows of a car: seatbelt warning: and intruder detection. The small form factor enables placement of the sensor in locations like overhead console around the rearview mirror: in the headliner: B/C pillars: and seats. It provides flexibility to Tier 1s and carmakers in planning end-use cases.