[Article] An introduction to xAP, part II

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So, How is xAP Used

Let us now go back to the opening scenario where X10 is used to control a light based upon the commands provided by a motion sensor. It does not make sense to turn a light on during the day just because there is motion. One solution is to configure the motion sensor to only provide the command when it is dark. This works for the light, but the indication of motion is still desired at all times of the day by the computer so it can do other things that are dependent upon motion in that area. The typical solution is to allow the motion sensor to transmit motion indication at all times, but to transmit it to the computer rather than to the light switch. The computer will first determine if it is dark and if so then it will send the command to the light switch.

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