Heads up! Home Depot is blowing out their Go Control sensor starter kits! The basic kit (2 door/window sensors + 1 PIR) is marked down to $12. The premium kit (3 door/window sensors, 1 PIR, 1 siren) is marked down to $25!
Your mileage may vary! I went to three home depots near me, two of them had already sold out of everything and one had six basic kits. Now all three of them are sold out of everything.
I figure even if you throw away the PIR, $6/ea for door and window sensors is a price I can’t pass up! I’ll figure out what I’m going to use them for later!