The relay has a power supply of 12 volts in and says it can handle 110 volts out which the alarm is. I am going to use a cellphone activated plug (WeMO) which will allow me to turn the power on/off to the 5 volt power supply as I leave and return. I will install inside a closet near the WiFi...
I am making a security door system with reed type magnet switch. I have tried it on my desk and it works. I can set the time to stay on for several minutes. I was wanting one which would stay on even if they closed the door back quickly. This does that. My questions are: Do I need a stepping 12...
I have teenagers breaking into my house. I live at the edge of town and they have gotten in twice I am looking for a door sensor Normally open so when the open the door it will turn on a siren. I would like for it to stay on for about 5 minutes. The problem now is they quickly open the door and...
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