I live in a 3 story 3-family house. In the back hallway, we each have a light on our floor as well as a switch (one per floor) but any of the switches will turn on/off all three lights. They always all work together.
I want to install a motion detector switch on the first floor so that when someone comes in the back door to the house/hallway, the hallway (all three floors) will automatically light. But I don't want it to prevent the 2nd and third floor tenants from being able to turn on/off the lights when they enter the hallway from their existing units. Can this work?
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