Telemetry & Sensors
Meshtastic nodes can report sensor data across the mesh, giving you visibility into the physical environment at remote locations.
Telemetry Types
| Type | Data |
|---|---|
| Device Metrics | Battery level, battery voltage, channel utilisation, airtime fraction |
| Environment | Temperature (°C/°F), relative humidity (%), barometric pressure (hPa) |
| Air Quality | PM1.0, PM2.5, PM10 particulate counts (µg/m³) |
| Power | Voltage and current readings from power monitoring sensors |
Device Metrics
| Icon | State | Description |
|---|---|---|
 | Full | Battery is well charged (≥80%). |
 | Low | Battery is low (≤20%) — charge the node soon. |
 | Charging | Node is plugged in and fully charged. |
 | Unknown | Battery level not reported by this node. |
 | Plugged In | Node is powered via USB/external power. |
Air Quality
The Indoor Air Quality scale shows category bands from Excellent (green) through Hazardous (maroon). The app supports multiple display modes for air quality readings:
Environment
| Icon | Reading | Description |
|---|---|---|
 | Humidity (with dew point) | Relative humidity percentage and calculated dew point temperature. |
 | Humidity | Relative humidity percentage only. |
 | High pressure | Barometric pressure above normal (≥1013 hPa). |
 | Low pressure | Barometric pressure below normal (<1013 hPa). |
Wind
| Widget | Description |
|---|---|
 | Wind speed, gust speed, and direction. |
 | Wind speed only (no gust or direction data available). |
Radiation
| Widget | Description |
|---|---|
 | Radiation level in µR/hr from a connected Geiger counter sensor. |
Viewing Telemetry
Telemetry is visible in two places:
- Node Detail — tap any node in the Nodes tab. The Logs section shows the most recent device metrics and environment readings.
- Telemetry Charts — tap the chart icon in a node detail to see historical graphs for any telemetry type the node has reported.
Configuring Telemetry
Go to Settings → Telemetry to enable telemetry modules and set reporting intervals:
| Setting | Description |
|---|---|
| Device Metrics Interval | How often (seconds) the node broadcasts battery and utilisation data. |
| Environment Interval | How often environment sensor data is broadcast. |
| Air Quality Interval | How often air quality sensor data is broadcast. |
| Environment Screen | Show environment data on the device screen. |
| Telemetry on Admin Channel | Restrict telemetry to the admin channel instead of broadcast. |
Supported Sensors
The app displays data from any sensor supported by Meshtastic firmware. Common sensors:
- BME280 / BME680 — temperature, humidity, pressure
- SHT31 — temperature, humidity
- MCP9808 — precision temperature
- INA219 / INA260 — power monitoring
- PMSA003 — air quality (PM2.5)
Sensor availability depends on your hardware. Check the Meshtastic hardware guide for compatibility.
Detection Sensor
The Detection Sensor module alerts the mesh when a connected PIR motion sensor or contact switch is triggered. Configure it in Settings → Detection Sensor. Alerts appear as messages on the primary channel and as node log entries.