# Common measurements list

In [ThingsML](https://docs.kpnthings.com/kpn-things/building-blocks/data-processing/thingsml-and-senml/thingsml) there is a measurement index list, allowing you to send only the index for a measurement instead of the full name and unit which is required in [SenML](https://docs.kpnthings.com/kpn-things/building-blocks/data-processing/thingsml-and-senml/senml).

If you don't use ThingsML, it is still best practice to use the common measurement names and units in your solution. With this you achieve higher compatibility with current and future data processing features in KPN Things.

### The list

| <p><strong>ThingsML</strong> <br><strong>measurement</strong><br><strong>index</strong></p> | **ID** (unique)      | **SenML Name**     | **SenML Unit** |
| ------------------------------------------------------------------------------------------- | -------------------- | ------------------ | -------------- |
| -24                                                                                         | TEMPERATURE          | temperature        | Cel            |
| -23                                                                                         | HUMIDITY             | humidity           | %RH            |
| -22                                                                                         | LATITUDE             | latitude           | lat            |
| -21                                                                                         | LONGITUDE            | longitude          | lon            |
| -20                                                                                         | ALTITUDE             | altitude           | m              |
| -19                                                                                         | POWER                | power              | W              |
| -18                                                                                         | PRESSURE             | pressure           | Pa             |
| -17                                                                                         | ANGLE                | angle              | rad            |
| -16                                                                                         | LENGTH               | length             | m              |
| -15                                                                                         | BREADTH              | breadth            | m              |
| -14                                                                                         | HEIGHT               | height             | m              |
| -13                                                                                         | WEIGHT               | weight             | kg             |
| -12                                                                                         | THICKNESS            | thickness          | m              |
| -11                                                                                         | DISTANCE             | distance           | m              |
| -10                                                                                         | AREA                 | area               | m2             |
| -9                                                                                          | VOLUME               | volume             | m3             |
| -8                                                                                          | VELOCITY             | velocity           | m/s            |
| -7                                                                                          | ELECTRIC\_CURRENT    | electricCurrent    | A              |
| -6                                                                                          | ELECTRIC\_POTENTIAL  | electricPotential  | V              |
| -5                                                                                          | ELECTRIC\_RESISTANCE | electricResistance | Ohm            |
| -4                                                                                          | ILLUMINANCE          | illuminance        | lx             |
| -3                                                                                          | ACCELERATION\_X      | accelerationX      | m/s2           |
| -2                                                                                          | ACCELERATION\_Y      | accelerationY      | m/s2           |
| -1                                                                                          | ACCELERATION\_Z      | accelerationZ      | m/s2           |
| 0                                                                                           | HEADING              | heading            | rad            |
| 1                                                                                           | CO\_CONCENTRATION    | COConcentration    | ppm            |
| 2                                                                                           | CO2\_CONCENTRATION   | CO2Concentration   | ppm            |
| 3                                                                                           | SOUND                | sound              | dB             |
| 4                                                                                           | FREQUENCY            | frequency          | Hz             |
| 5                                                                                           | BATTERY\_LEVEL       | batteryLevel       | %EL            |
| 6                                                                                           | BATTERY\_VOLTAGE     | batteryVoltage     | V              |
| 7                                                                                           | RADIUS               | radius             | m              |
| 8                                                                                           | BATTERY\_LEVEL\_LOW  | batteryLevelLow    | boolean        |
| 9                                                                                           | COMPASS\_X           | compassX           | T              |
| 10                                                                                          | COMPASS\_Y           | compassY           | T              |
| 11                                                                                          | COMPASS\_Z           | compassZ           | T              |
| 12                                                                                          | READ\_SWITCH         | readSwitch         | /              |
| 13                                                                                          | PRESENCE             | presence           | boolean        |
| 14                                                                                          | COUNTER              | counter            | /              |


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