The Farm21 soil sensor measures: relative air humidity (percentage of moisture in relation to the maximum moisture percentage of the air for this temperature), air temperature, soil temperature and soil moisture at depth -10cm, -20cm and -30cm.

Relative Humidity Accuracy @25°C (20%RH to 80%RH): ±2 %RH

Accuracy temperature soil and air: ±1°C or better.
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Soil moisture: this depends on how the sensor is placed and whether the right soil type is selected. In general a soil moisture accuracy of +/-3% can be achieved when the required installation procedure is followed.

Depends on the type of crops, the consistency of your field and the amount of granularity/accuracy you would like. Usually we advice an average of 1 sensor per 1.5ha. But in some cases you need a lot less or more. The minimum number of sensors you can order is 10. contact us and we will give you the best advice we can.

You can find an instruction video here or have a look at the Farm21 installation guide.

No, this sensor is designed to have the upper part above the soil. Each sensor has a depth indication line that tells you how far to place the sensor in the soil.

Yes. Our sensors do not have a GPS tracker but during the installation process the systems stores your smartphone's current location as the sensor location. In the platform the location of the sensor can be adjusted when incorrect or when the sensor is moved to another spot.

The data is transmitted using the LoRaWAN-technology. This Long Range and low power technology allows the Farm21 soil sensor to sent its data over a distance up to 10km.

The answer to this question is twofold; after heavy rain the air surrounding the humidity sensor still contains moisture, it takes some time to diffuse. The other factor lies in the wet soil moisture, water evaporating from the moisture creates a high humidity zone close to the soil.

Our sensors use a standard 3.0V CR123A battery (also known under the following names: CR123, 17345 and 16340).

Depending on weather conditions and gateway-sensor distance, the battery should last about a year.

All data is transmitted encrypted. For more information on security we refer to this whitepaper written by the LoRa Alliance.

As soon as a battery is placed inside the Farm21 soil sensor, it will attempt to connect with the network. Once a secure data connection is obtained, the sensor will transmit data once every hour. If the sensor is outside reach for the network, data will not show up in the data platform. Consider the installation of a dedicated gateway in order to improve network coverage.

At this point in time only Farm21 sensors can be added to the dashboard. Feel free to leave a feature request if you think this should be possible.

Automatically redirecting the data for the Farm21 sensor is possible on request. Feel free to contact us.

Yes, all data can be exported to common formats.

We do not have a limit on the maximum amount of sensors. A single gateway can host about 1000 sensors.

The Netherlands, Switzerland, Finland, Belgium and France have a nationwide LoRa network of which connectivity is included in the Farm21 platform fee. Other countries require you to use our preconfigured LoRaWAN gateway.