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60 GHz mmWave radar module based on the Acconeer A121 Pulsed Coherent Radar (PCR) sensor, designed for presence detection, micro-motion detection, and high-precision distance measurement. Includes mounting holder and a set of radar lenses. Supports USB, UART, and I2C interfaces. Waveshare A121 Range Sensor Box
The A121 Range Sensor Box is a 60 GHz mmWave radar module based on the Acconeer A121 sensor utilizing Pulsed Coherent Radar (PCR) technology. The module enables detection of human presence, motion, and micro-motion within a defined detection area, as well as high-resolution distance measurement. Parameters such as detection range and sensitivity are configurable, allowing adaptation to specific application requirements.
The board integrates an STM32L431CBT6 microcontroller with an Arm Cortex-M4 core operating up to 80 MHz, equipped with 128 kB Flash and 64 kB RAM. This allows local radar signal processing or communication with an external host controller via a register-based protocol. User applications can be deployed using the Acconeer RSS environment.


The version with holder includes a mounting enclosure and interchangeable radar lenses: hyperbolic lens, flat cover lens, and FZP lens. Selecting an appropriate lens allows shaping the beam pattern and adjusting the detection area to a specific application, for example narrowing or widening the sensing field of the radar module.
Compact PCB dimensions of 39 x 39 mm and an optimized antenna structure provide stable detection performance and high signal gain. The design allows installation behind plastic or glass surfaces. Communication interfaces include USB, UART, I2C, and GPIO, facilitating integration with embedded systems, building automation, and industrial IoT applications.

Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
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