need some help - have a long driveway & a couple of spare chamberlin infared sensors that are extra (go at the bottom of the door to make it go back up if you interupt the beam). I would like to use these at the tip of my driveway. can anyone tell me how to contruct a system using these? what voltage do they take? how do I hook them up to what type of chime or indicator in the house that i can find at radio shack or somewhere? a useful note is the tip of my driveway - where my posts are (for mounting these) is 2 acres away. thanks
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