Aranet4 Teardown

Aranet4 is a wireless CO2, temperature and relative humidity sensor with Bluetooth LE connectivity (made by SAF Tehnika) which is supported by the Sensor Pilot web app. It appears to be using the following components:

Note that the Aranet4 PRO version has an additional LoRa radio which isn’t populated on this Aranet4 Home version.

Photos of Aranet4 Home

Front cover with eInk display of the Aranet4 CO2, temperature and humidity sensor
Front cover with eInk display of Aranet4.
Two AA batteries powering the Aranet4 CO2, temperature and humidity sensor
Two AA batteries powering Aranet4.
Rear case of the Aranet4 CO2, temperature and humidity sensor
Rear case with place for two AA batteries of Aranet4.
Case and the circuit board of the Aranet4 CO2, temperature and humidity sensor
Case and the circuit board of Aranet4.
eInk display after removing the front cover of Aranet4 CO2, temperature and humidity sensor
eInk display after removing the front cover of Aranet4.
eInk driver circuit with unpopulated circuit for WiFi or Lora connectivity of the Aranet4 CO2, temperature and humidity sensor
eInk driver circuit with unpopulated circuit for Lora connectivity (for Aranet4 PRO) of Aranet4.
eInk display with the driver circuit of the Aranet4 CO2, temperature and humidity sensor
eInk driver circuit with unpopulated circuit for Lora connectivity (for Aranet4 PRO) of Aranet4.
CO2 sensor and Bluetooth LE radio module of the Aranet4 CO2, temperature and humidity sensor
CO2 sensor and Bluetooth LE radio module of Aranet4.
CO2 sensor and Bluetooth LE radio module of the Aranet4 CO2, temperature and humidity sensor
CO2 sensor and Bluetooth LE radio module of Aranet4.

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