DIY Home Improvement Forum banner
spdt switch
1-1 of 1 Results
  1. Electrical
    There is down the stairs a lamp with 2 bulbs. One is controlled by apartment A (by both a switch at the bottom of the stairs and 1 within the apt.) and the other by apartment B (which also has its own control with switches up and down). Up the stairs there is another lamp with 2 bulbs also...
1-1 of 1 Results
Top