I have a natural gas unit heater in my garage that heats the place very quickly. The temperature differential of standard t-stats is rather low and I got tired of the unit running so frequently so I cobbled this together to fire it up at 45? and shut it down at 60?. The extra SPDT switch is there so that I can use just the fan in summer.
I also don't live in the greatest neighborhood so I like to always have the doors locked and alarm system armed. Being a lazy person, I hate fumbling with keys to get in and I don't like messing with the alarm each time either. So I added an electric strike and an electric deadbolt to the back entrance that I use the most. Now I can either hit a switch in the garage that is hidden (and only works when a keyswitch is activated) or press a button on my keyfob and just push the door open. I also put an outdoor keypad at the door for myself or others that works with a code. Inside is a request to exit motion. Any authorized means of entry shunts the doors alarm contacts and the whole thing is completely battery backed up. Locks are fail secure, which I know isn't totally kosher if there was ever a need to get out in an emergency, but hey, I live alone
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This all worked fine and dandy til the first time I had a pizza delivered and forgot that the alarm was on....... oooops. So I hacked open a nonworking leviton wall switch occupancy sensor and rigged it up to shunt the front door alarm with a touch of the override button. Slipped a red led in there for armed and a green for shunt.