GreenGO node is a multisensor device designed to send data below the surface. It has two plugs where you can connect the sensors that you prefer. 
It uses an NB-IoT protocol communication to be reliable in any situation. The default configuration has two sensors that acquire soil temperature, soil water content and electrical conductivity to get affordable data at two different depths.

It can be buried up to 20 cm depending on the signal strength. Anyway, the sensors wire allow the probe to reach any depth. 

You can see how the water flow through your soil profile, understand how long water takes to reach a certain soil horizon, check your underground heating system and control salinity leaching. 

The device acquire data every hour and sent them every 4 hours. We know that you want data and you want them when really matter. The node has a smart algorithm to recognise uncommon water content, temperature or high salinity. In this case, the GreenGO node will send immediately data to you. 

You can request your favourite sensor, we are able to set it prior to or after ordering.