Quote Originally Posted by i2i View Post
You're right they are used as home switches, and i suppose as long as the area is kept clean they would be ok for the job. .

Well when its running i will do some tests and see just how accurate they really are.

Quote Originally Posted by i2i View Post
Do you have a schematic for the relay add on.

Looking at the data sheet it looks like it will drive a small relay direct, or even switch an input to ground.

Well its not really A wiring diagram but i think you will understand it:-

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Rick