With building automation, there is a need to use HVAC to maintain a comfortable environment. What is important is the network that transmits the sensor and its information. Renesas has developed a wireless networking solution for HVAC that can collect environmental data (temperature, humidity, and air quality) over the air.


The wireless sensor network solution uses Bluetooth® 5. 0 Low Energy to collect temperature/humidity/IAQ(air quality) data. You can collect information on wireless devices connected to your PC and alert you to the preconfigured air quality. In addition, the GUI allows wireless pairing settings, etc. and easily construct an environment sensing system.


  • Bluetooth Low Energy 5 0 Networking with High-Power-Efficiency Microcontroller RA4W1
  • Use HS3001, ZMOD4410 to measure Humidity, Temperature, IAQs (TVOC)
  • The sensor processing function is realized by the endpoint.
  • Alert function that is aware of actual operation
  • Network GUI that can be easily constructed with reduced man-hours

Solution Configuration Examples

Wireless Sensor Network Solution Configuration Examples

Block Diagram

The solution consists of several assessment boards: EK-RA4W1, a sensor board, and a power board.

Wireless Sensor Network Solution Block Diagram
  • Software
    • Sample Software / GUI
  • Hardware
    • EK-RA4W1 (Evaluation Board)
    • Sensor Board / Power Board

For more information, contact our dealer or sales office.

Related Products

Product ID Title Featured Document Buy / Sample
Gas Sensors
ZMOD4410 Indoor Air Quality Sensor Platform Datasheet Buy / Sample
Humidity and Temperature Sensors
HS3001 High-Performance Relative Humidity and Temperature Sensor Datasheet Buy / Sample
ISL80505 High Performance 500mA LDO Datasheet Buy / Sample
RA Arm® Cortex®-M MCUs
RA4W1 Low Energy, Single Chip 32-bit Microcontrollers with 48MHz Bluetooth® 5.0 Datasheet Buy / Sample