XIAO 60GHz mmWave Respiratory Rate and Heartbeat Sensor -MR60BHA2

The Seeed Studio XIAO MR60BHA2 is a compact 60 GHz mmWave radar sensor kit for contactless detection of respiratory rate, heartbeat, and human presence. The integrated MR60BHA2 radar sensor is based on FMCW technology (Frequency Modulated Continuous Wave) and, according to the manufacturer, achieves a detection accuracy of 90% for respiratory rate and 85% for heartbeat. The controller used is a XIAO ESP32C6, which supports Wi-Fi 6, Bluetooth 5.3, Zigbee, and Thread. Out of the box, ESPHome firmware is installed, allowing code-free plug-and-play integration with Home Assistant.

Features:

• 60 GHz FMCW radar detects respiratory rate (90% accuracy) and heartbeat (85% accuracy) contactlessly at a distance of 0.4–2 m, as well as static presence up to 6 m
• XIAO ESP32C6 with Wi-Fi 6, Bluetooth 5.3, Zigbee, and Thread – flashed with ESPHome firmware for code-free Home Assistant integration
• BH1750 ambient light sensor (1–65,535 lux) and WS2812 RGB LED for context-based visual feedback and advanced automation logic
• Two Grove GPIO ports (D0, D10) for easy expansion with external sensors and actuators without soldering
• Independent of temperature, humidity, light, dust, and airflow – the radar sensor measures even through thin walls and covers
• Programmable via Arduino IDE, ESP-IDF, and ESPHome – OTA firmware updates possible for the ESP32C6 side

Application Examples:

• Sleep monitoring – contactless detection of respiratory rate and heartbeat mounted over the bed for health and sleep quality analysis
• Presence detection in smart home automations for lighting, climate, and security systems via Home Assistant
• Care for the elderly – silent monitoring of vital signs without body contact, with alerts in case of anomalies
• Operational safety – detection of persons in hazardous areas without a camera for privacy-compliant solutions
• Prototypes and research projects for contactless bio-radar applications with Arduino or ESP-IDF

Documentation:

• Seeed Studio Wiki (MR60BHA2 Getting Started)

Technical Specifications:

• Manufacturer: Seeed Studio
• Manufacturer SKU: 114993387
• Radar Sensor: MR60BHA2, 60 GHz FMCW
• Detection Field: 80° horizontal × 80° vertical
• Measurement Range for Breath/Heartbeat: 0.4–2.0 m
• Measurement Range for Presence: up to 6 m
• Breath Detection Accuracy: ~90%
• Heartbeat Detection Accuracy: ~85%
• MCU: XIAO ESP32C6
• Wi-Fi: Wi-Fi 6 (2.4 GHz)
• Bluetooth: BT 5.3
• Other Wireless Protocols: Zigbee, Thread (802.15.4)
• Light Sensor: BH1750, 1–65,535 lux (expandable to 100,000 lux)
• RGB LED: WS2812
• Grove Ports: 2× (D0, D10, GPIO)
• Serial Interface: UART (baud rate 115200)
• Other Interfaces: I2C, SPI, ADC, PWM, SDIO
• USB: 2× USB-C (one on XIAO module and main board each)
• Power Supply: 5 V / 1 A via USB-C
• Preloaded Firmware: ESPHome
• Programming Environment: Arduino IDE, ESP-IDF, ESPHome
• Package Dimensions: 100 × 65 × 35 mm
• Gross Weight: 49 g

Scope of Delivery:

• 1× XIAO MR60BHA2 Sensor Kit (MR60BHA2 radar module + XIAO ESP32C6)