How do wireless switches work?

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Tags

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2. #switch
3. #location
4. #pressed
5. #rocker
6. #built
7. #wireless
8. #light
9. #receiver
10. #their
11. #within
12. #other
13. #range
14. #placed
15. #inside
16. #energy
17. #could
18. #stored
19. #fixture
20. #desired
21. #there
22. #wired
23. #radio
24. #enough
25. #signal
26. #magnetic