The power supply for the valve is the orbit supply for the unit, and it works standalone.

The timer is a simple prop timer from FrightProps.com
http://www.frightprops.com/frightpro...ct.asp?ID=0665
http://www.orbitonline.com/lib/media/94080-24%20rB.pdf

I have wired it exactly as the specs say,but it doesn't work. The LED on the motion sensor lights simultaneously with the light on the board, so that works... but it simply will not activate the valve. I can't figure it out.