This cold chain temperature monitoring solution uses wireless sensors to measure and record real-time temperatures in a remote location with a Narrowband Internet of Things (NB-IoT) network, like a reefer, and detect temperature changes.

The scalable Bluetooth® Low Energy (LE) for cold chain management solutions utilizes IoT-enabled sensors to monitor and manage the environment of temperature-sensitive packages with anti-tampering capability to prevent spoilage and waste as they move through the supply chain.

System Benefits​:

  • Real-time based monitoring using the RA4W1 32-bit MCU with Bluetooth LE 5.0 is geared towards IoT applications requiring security, large embedded RAM and low power consumption comes in 7 x 7mm form factor.
  • Secure Crypto Engine (AES128/256, GHASH, TRNG).
  • Utilizes Renesas' high-accuracy sensors, the ZMOD4410 indoor air quality sensor and HS3001 humidity and temperature sensor, for environmental monitoring.
  • RA4W1 is fully compliant with 2Mbit high-throughput (HT) and long-range support in a single-chip MCU which is a cost-competitive solution targeting IoT-based applications that require a high-performance Arm® Cortex®-M4 core.




  • Pharmaceutical
  • Vaccines and medicines
  • Logistics and assets
  • Food and agriculture
  • Fresh dairies

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Template 1 Connector Arrow ADC ADC ADC Current Source Current Source Current Source RTD Temp Sensor RTD Temp Sensor RTD Temp Sensor Connector double arrow Connector double arrow.27 Connector double arrow.28 Connector Arrow.29 Vertical Wire Bundle Label Text 10pt.1046 2 2 Sheet.32 Vertical Wire Bundle.33 Label Text 10pt.1046 2 2 Sheet.35 Vertical Wire Bundle.36 Label Text 10pt.1046 2 2 Sheet.38 Connector Arrow.40 Temperature & Humidity Sensor Temperature & Humidity Sensor Temperature & Humidity Sensor Indoor Air Quality Sensor Indoor Air Quality Sensor Indoor Air Quality Sensor Magnetic Sensor Magnetic Sensor Magnetic Sensor Connector Arrow.41 Connector Line Connector Arrow.43 Connector Line.44 5V/1A 5V/1A 5V/1A Connector Arrow.46 Vertical Wire Bundle.47 Label Text 10pt.1046 4 4 Sheet.49 Connector Line.50 3.3V/0.3A 3.3V/0.3A 3.3V/0.3A Connector 1.139 Connector Arrow.53 Connector double arrow.54 Connector Line.56 Antenna Sheet.58 Sheet.59 Sheet.60 Sheet.61 Sheet.62 Connector Line.63 Connector 1.139.64 Horizontal Wire Bundle Communication Lines B.795 Label Text 10pt.796 2 2 Connector double arrow.68 Connector Arrow.69 Vertical Wire Bundle.70 Label Text 10pt.1046 2 2 Sheet.72 1.8V 1.8V 1.8V Connector Arrow.74 Connector Arrow.75 Connector Arrow.76 Connector Line.77 Connector Line.78 3.3V/0.3A.79 3.3V/0.3A 3.3V/0.3A Connector Arrow.80 Connector Arrow.81 Connector Arrow.82 Connector Arrow.83 Connector Line.84 3.4V~4.6A 3.4V~4.6A 3.4V~4.6A Connector Line.88 3.4V~4.6V.89 3.6V~3.6A 3.6V~3.6A Connector double arrow.90 Connector Arrow.91 Connector Line.92 5V/1A.93 5V/1A 5V/1A Connector 1.139.94 Connector 1.139.95 Connector 1.139.96 Connector Arrow.97 Connector Line.98 3.3V/0.3A.99 3.3V/0.3A 3.3V/0.3A Battery Charger Battery Charger Battery Charger Buck-Boost Buck-Boost Buck-Boost Boost Boost Boost LDO LDO LDO NB-IoT Module NB-IoT Module NB-IoT Module Level Translator Level Translator Level Translator Bluetooth Logo Sheet.102 Bluetooth Sheet.104 Sheet.105 Sheet.106 Sheet.107 Sheet.108 Sheet.109 Sheet.110 Sheet.111 Sheet.112 Sheet.113 Bug_1_ Sheet.115 Bug Connector Arrow.117 Connector double arrow.118 12V/24V 12V/24V 12V/24V Battery.27 Sheet.121 Sheet.122 Sheet.123 INT INT INT Alert Alert Alert AS118 AS118 AS118 Connector 1.139.127 Connector 1.139.128 MCU EP Multi-function block MCU MCU Peripheral VDD VDD Peripheral.8 UART2 UART2 Peripheral.9 UART UART ADC 2 ADC ADC Peripheral.11 I2C I2C
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