The A121 range sensor is based on 60GHz pulsed coherent radar (PCR) technology, enabling human presence and motion detection, and supporting high-precision distance measurement.• A121 60GHz pulsed coherent radar (PCR), integrating RF, baseband, and AiP antenna, supports human presence, micro-motion detection, and high-precision ranging.• Integrated Arm Cortex-M4 MCU (STM32L431CBT6), 80MHz, 128KB Flash and 64KB RAM, supporting local radar processing.• Compact 39x39 (mm) size with optimized antenna structure for high gain and stable detection.• Supports UART, I2C, and GPIO interfaces, outputting radar detection results based on register protocol.Operating Frequency Band: 60GHzModulation Method: PCRSupply Voltage: 5VIO Level: 3.3VOutput Interface: USB / UART / I2CCommunication Baud Rate: UART: 921.6kbps; I2C: 100K / 400KDetection Distance Resolution: 0.03m @ 25° Profile1Detection Angle: Horizontal: 53°; Vertical: 65°Detection Accuracy: 0.03m @ Profile1Maximum Operating Current: 5V 80mAColor: BlueMaterial: PCBPackage Contents:1*Range Sensor 1*10-pin Connector CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.