← Sensors
Air monitor
The fullest device in the protocol: seven readings, which with the supply voltage come to 24 of the 25 bytes a radio frame has for readings.
Readings
7 sensorsCO2612ppm51330004-47
Fine dust (PM2.5)8.4µg/m³51330004-54
Particulate matter0.6ppm51330004-5B
Air quality (VOC index)9651330004-58
Sound level42.3dB51330004-55
Temperature21.6°C51330004-42
Relative humidity48.2%51330004-43
Example readings
Device
- Status
- Simulated
- Device type
- 0x0004
- Link
- 2.4 GHz radio (nRF24L01+)
- Report
- 24 of 25 bytes, with the supply voltage
A device type named in the protocol. The simulated hub has one, so the software can already show it; there is no hardware or firmware yet.
On the radio
What it sends
Every report carries the readings below, in this order, after the device's supply voltage.
Report
type 2 · 24 bytes of readings| Sensor | Tag | Sent as | Sensor id |
|---|---|---|---|
| CO2 | 0x47 | u16, ppm | 51330004-47 |
| Fine dust (PM2.5) | 0x54 | u16, 0.1 µg/m³ | 51330004-54 |
| Particulate matter | 0x5B | u16, 0.1 ppm | 51330004-5B |
| Air quality (VOC index) | 0x58 | u16 | 51330004-58 |
| Sound level | 0x55 | u16, 0.1 dB | 51330004-55 |
| Temperature | 0x42 | i16, 0.01 °C | 51330004-42 |
| Relative humidity | 0x43 | u16, 0.01 % | 51330004-43 |