These devices are sensors to be put on farms in areas like the Murray Darling. They sense how much moisture is in the soil, and if irrigation systems need to be turned on and how much water needs to be dispersed into the soil.
The devices, which have an 800-metre range, transmit information to the farmhouse, where information is sent off to a control centre.
In tests that were run over the last two years on four farms in Victoria, the system cut water usage by 20 percent, the team said.
Google Chrome OS demonstration
Vice President of Product Marketing Sundar Pichai gives a virtual tour of Google's new operating system, Chrom… Watch it now
Having problems with complex data center? Simplify your data center now.
| Apple iPhone 3GS 32GB | 35 plans |  4% |
| Apple iPhone 3GS 16GB | 35 plans |  4% |
| Sony Ericsson Satio | 6 plans | 1% |
| Nokia E63 | 39 plans | 1% |
| Blackberry Curve 8520 | 6 plans | 1% |
| Apple mobile phones | 1% |
| Nokia mobile phones | 1% |
| Sony Ericsson mobile phones | 1% |
| Samsung mobile phones | 1% |
| LG mobile phones | 2% |
Sick of broken tender sites
Cyberwar: What is it good for?
Is wholesale-only backhaul just a pipedream?
What makes you click?
Tell us for a chance to win a $1,000 GAME gift voucher.
Click here for more.
Optus Deal
Broadband + home phone + PlayStation®3 in a single package price!
Click here for more!
Best Laptops
Check out the best laptops here!
Click here for more.
