[QUOTE=Wavytone;1304836]Peter,
My next question is have you considered the consequences when this fails, with the water running ?
240V electricity and water don't play well so beware anything involving voltages above 3v dc.
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Firstly, when controllers fail, the valve will usually shut. 99% of irrigation control valves do not operate on 240VAC, but are mix of lower range DC voltages, usually 12VDC.
Back in the "good old days", we used a landline phone to command controllers on several irrigation projects and it cost a bomb! Nowadays this type of thing is actually off the shelf.
Try this mob!
http://www.hrproducts.com.au/product...ers/web-based/
Cheers, Rod