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Originally Posted by TubaMorg
I believe he was referring to last year's photoswitches, which used IR. There were two included in the kit, one unit was just a reciever while the other unit was a transmitter/reciever. There are some other threads on CD about specifics on how to wire it. Essentially, as the name suggests, it just turns on or off in response to a signal (IR). I believe the spec sheet said the range is good for several feet, but that depends on the application. You can get more range if using the sensor in a beam breaking type application. If you are using reflected IR the range is shorter, depending on what your are reflecting off of.
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umm..the reflecting part... if it was reflected off a spinning mirrior... would it lose the insensity of the beam?