Traditional irrigation systems waste quite a bit of water by simply saturating the land for an extended period, which is why 'Exilong' watering systems are designed a little differently. Created by Tevatronic, the 'Exilong' system works by monitoring the plant water suction pressure in the soil to determine how much water is required to keep them healthy.
The 'Exilong' system is designed to help add the capabilities of an autonomous irrigation system, but it's also intended to decrease the amount of water that's used to keep gardens green. The 'Exilong' watering systems are purported to decrease roughly 75% of water use when it comes to gardening. This is a substantial decrease that could be of vital importance for drought-stricken areas that need to conserve every drop of H2O possible.
'Exilong' Watering Systems Can Reduce Water Use by 75%
Michael Hemsworth — October 8, 2016 — Eco
References: kickstarter & geeky-gadgets