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Febris CO2 Payload Description

Are you looking for the payload description for the Febris CO2 sensor?

📄 You can view the PDF above or download it here .
Febris Symbole und Erklärungen
Figure 1. Febris Co2 Sensor
Note

Here you will find the table for a clear overview.

Module Key (module_key)

Bytes: 1-2
Alias: Module Key
Name: module_key
Valid for versions: All, base payload, valid and available for all sensors in the Febris series

Description:

Byte 1

  • 4 bits MSB: Module code. For mioty, only the "Sentiface" telemetry module, i.e., always 0x1.
  • 4 LSB bits: Major version. Firmware with the same major version, but a higher minor version, remains compatible with older decoders. However, the number of bytes may change.

Byte 2

  • 4-bit MSB: Minor version. New software versions can gradually add new telemetry to the data packet.
  • 4-bit LSB: Sub-/product version. In Helios, these bits encode the specific configuration of the connected sensors.

Uplink Counter (uplink_counter)

Byte: 3
Alias: Uplink Counter
Name: uplink_counter
Valid for versions: All, base payload, valid and available for all sensors in the Febris series

Description: Protocol-independent uplink counter with a maximum value of 255. After reaching this value, the counter resets to 0.

Bytes: 4-5
Alias: Battery Voltage
Label:  battery_voltage
Valid for versions: All - Base payload, valid and available for all sensors in the Febris series
Description: Current battery voltage in millivolts
//Voltage in volts battery_voltage: (dataBytes[3] << 8 | dataBytes[4])/1000.0,

Byte: 6-7
Alias: Internal Temperature
Name:  internal_temperature
Valid for versions: All - Base payload, valid and available for all sensors in the Febris series
Description: Sensor temperature: Internal_temperature = ((bytes[5] << 8) | bytes[6]) / 10 - 100;

Byte: 8
Alias: Rel. Humidity
Label:  humidity
Valid for versions: All - Base payload, valid and available for all sensors in the Febris series
Description: Relative humidity in %

Byte: 9-10
Alias: Dew Point
Description:  dewpoint
Valid for versions: All - Base payload, valid and available for all sensors in the Febris series
Description: Dew point in °C

For versions: S-FEBR-XXXX-CO2-XXX

Bytes: 11-12
Alias: Air Pressure
Label:  pressure
Valid for versions: S-FEBR-XXXX-CO2-XXX
Description: Air pressure in hPa

Byte: 13-14
Alias: CO2
Description: co2_ppm
Valid for versions: S-FEBR-XXXX-CO2-XXX
Description: CO2 value in pp

Byte: 15
Alias: Alarm
Label: alarm
Valid for versions: S-FEBR-XXXX-CO2-XXX
Description: Alarm Variable:
• 0: 0–1000 ppm (green)
• 1: 1000–2000 ppm (yellow)
• 2: 2000–5000 ppm (red)
Similar to a traffic light; thresholds are adjustable