> For the complete documentation index, see [llms.txt](https://help.aranet.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.aranet.com/gateway/gateway-pro/sensors-and-pairing/pairing-procedure.md).
# Pairing Procedure
You can pair sensors at any time from the **Sensors** screen. At the moment, it is possible to connect only those sensors that are supported by the Aranet Gateway Pro:
| Supported sensor list | |
| ---------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Sensor type | Sensor product number |
| CO2 sensors | TDSPC0\*3; [TDSPC0\*5](https://aranet.com/en/pro/products/co2_and_temperature_sensor) |
| Temperature sensors | [TDSPRH\*2.002](https://aranet.com/en/pro/products/aranet2-pro); [TDSPT2\*4](https://aranet.com/en/pro/products/t-compact-sensor); [TDSPT1\*1](https://aranet.com/en/pro/products/t-rh-mini-sensor); [TDSPT8\*2](https://aranet.com/en/pro/products/aranet-trh-ip67); [TDSPT809](https://aranet.com/en/pro/products/t-rh-probe-heavy-duty); [TDSPT509](https://aranet.com/en/pro/products/t_rh_sensor_with_radiation_shield); [TDSIR001](https://aranet.com/en/pro/products/Aranet_IR_Plant_Sensor); [TDSPT306.010](https://aranet.com/en/pro/products/probe-6x100mm-cable-1m); [TDSPT306.01E](https://aranet.com/en/pro/products/PT100_temperature_sensor_extended_range); [TDSPT506.010](https://aranet.com/en/pro/products/pt1000_transmitter); [TDSPTA06.010](https://aranet.com/en/pro/products/pt100_transmitter) |
| Radon sensors | [TDSPSR\*2](https://aranet.com/en/pro/products/aranet-radon-plus-pro) |
| Particle matter sensor | [TDSPPM\*2](https://aranet.com/en/pro/products/aranet_pm_sensor) |
| Soil moisture sensor | [TDSPSM\*2.100](https://aranet.com/en/pro/products/soil_moisture_sensor_1_5_m) |
### Pair a new sensor
From the **Dashboard**, press **Sensors**.
The **Sensors** tab shows all paired sensors. Press **Add more** to start pairing.
Select the **measurement interval** for the sensor.
Pairing starts automatically after you select the interval.
When pairing completes:
* The new sensor appears at the top of the sensor list.
* The sensor card shows a **green indicator**.
* The sensor uses the selected **measurement interval**.
### Re-pair a sensor (change measurement interval)
If you paired a sensor with the wrong interval, re-pair it:
1. Open **Sensors**.
2. Press **Add more**.
3. Select the desired **measurement interval**.
4. Insert the batteries into the sensor.
The Gateway Pro re-pairs the sensor automatically.
### Pairing limit
You can pair up to **100 sensors** to one Gateway Pro.
When you reach the limit, you can’t pair additional sensors.
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