tds water with MySensors

[alexsh1]

Hello,

Anyone tried to implement TDS Water tester with MySensors? I need to do readings in order to setup an alarm when cartridges have to be changed.
I have a reversed osmosis water filter and recently have installed TDS Water tester DM-1 like this:
http://www.tdsmeter.com/products/dm1.html

This is the scale for the tester.
http://g03.a.alicdn.com/kf/HTB1M1xuJFXXXXbSXXXXq6xXFXXXG/Water-Quality-Tester-Combo-of-0-1-pH-Accuracy-PH-Meter-and-2-Readout-Accuracy-TDS.jpg

[alexsh1]

Anyone? Any clues?