Frost Alarm

No matter what kind of frost protection you use, one thing is absolutely essential for all systems: you must start in time. One of the main causes of frost damage is that protection systems are being launched too late. This can be due to different issues:

  • growers do not have a frost alarm.
  • growers are starting their protection system, based on a dry temperature.
  • the frost alarm is not placed in the right place.
  • the temperature sensor is installed too high.

When it comes to frost protection, there is only one important temperature: the wet temperature. Using a dry temperature meter is one of the biggest mistakes you can make. Therefore, it’s crucial to have a good alarm system that tells you when to start, based on the wet temperature. Because most systems use a dry temperature sensor, we decided to develop our own Frost Alarm.

This new device is only for frost warning. Our goal was to make a reliable alarm that is very easy to install and that works on the wet temperature.

It’s powered by a 12 or 24 Volt battery (not included). It works with a SIM-card (also not included) so you need mobile network coverage.

You can send SMS warning messages to maximum 3 mobile phones. It’s also possible to interrogate the station by sending a text message. The station will send you back all data: wet and dry temperature, relative humidity, dew point, battery voltage and alarm temperature.

When the set temperature is reached, it sends an alarm message to the phone numbers that are saved in the system. It will also send a message when the battery voltage becomes too low.

It comes with a inox pole.


There are many reasons why our alarm is probably the best:

  • no alarm is so easy to start up.
  • alarm is based on the wet temperature.
  • the use of a SIM-card to send a text message. (not included)
  • possibility to send a text message to 3 mobile phones.
  • possibility to send a text message to the alarm. The alarm will respond with a text message that includes all data: wet temperature, dry temperature, humidity, voltage of battery, wind speed, installed alarm temperature.
  • works on any battery from 9 to 24 Volt. (not included)
  • sensor with a precision of 0,1 °C for maximum precision.
  • delivered with adjustable inox support.

How to install?

When installing your alarm, you need to respect a few rules:

  • place the alarm in the orchard or vineyard that you want to protect.
  • place the alarm in the lowest (=coldest) spot of the field.
  • if you have several fields, use one alarm for each field.
  • the sensor must be placed at the same height as the lowest flowers/buds.

Download Leaflets

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Link to Fieldclimate Database

Use the link below to connect with the Fieldclimate database.