Electronic Circuits Schematics

Is this Electronic Circuit ok?

Here’s the photo :http://www.facebook.com/photo.php?pid=5130576&l=5acf6d1659&id=685516246

It’s a device for automated temperature control in a desert environment. Tell me what you think of the schematic .

Can’t make out the schematic, but it looks too involved. e.g., check some of these:

http://www.discovercircuits.com/T/temp-cont.htm

How to Build Electronic Circuits : Why Schematics are Used to Build Electronic Circuits