Wireless sensors are the cornerstone of building and home automation systems. They are specifically designed to detect smoke, carbon monoxide (CO), organic compounds, proximity, etc. These features can ensure the safety and effectiveness of smart devices and systems.

System Benefits:

  • Features a high-performance and cost-optimized RA Family of Arm®-based microcontrollers. The RA2A1 is well suited for low-power and cost-sensitive applications, such as sensor hubs.
  • Supports various sensors for smoke, CO, temperature, humidity, indoor/outdoor/refrigerator air quality, light, and proximity detection. Up to six sensors can be connected via I2C.
  • Very few external components are needed.




  • Smoke / carbon monoxide detectors
  • Organic compound detection

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16:9 Display 11pt text 11pt text AS009 AS009 AS009 Display Sheet.4 Sheet.5 Sheet.6 Sheet.7 Sheet.8 Sheet.9 Sheet.10 Sheet.11 Sheet.12 Sheet.13 Sheet.14 Sheet.15 Sheet.16 Sheet.17 Sheet.18 Sheet.19 Sheet.20 Sheet.21 Sheet.22 Sheet.23 Sheet.24 Sheet.25 Sheet.26 Sheet.27 Sheet.28 Sheet.29 Sheet.30 Sheet.31 Sheet.32 ON ON ON OFF OFF OFF Sheet.35 Sheet.36 Sheet.37 Sheet.38 Sheet.39 Sheet.40 Sheet.41 Humidity/Temperature Sensor Humidity & Temperature Sensor Humidity & TemperatureSensor MCU MCU MCU Display Display Display LDO LDO LDO I2C I2C I2C I2C I2C I2C I2C I2C I2C AUX Power AUX Power AUX Power Connector Arrow Board - Optional Light Sensor Light Sensor Light Sensor Gas Sensor Gas Sensor Gas Sensor Sensor Module Sensor Module Sensor Module Connector Arrow.74 Connector Arrow.75 Connector Arrow.76 Connector double arrow Board - Optional.79 Board - Optional.81 Board - Optional.82 Connector Arrow.83 Connector Arrow.84 Board - Optional.85 3.3V 3.3V 3.3V 5V 5V 5V Note: The dotted lines represent separate boards. Note: The dotted lines represent separate boards. Note: The dotted lines represent separate boards.
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