Garage doors in our neighborhood are being opened by a master code. Can an electrician wire the light switch to shut off power to the garage, so the door doesn't open at night or when we are away? I have seen the locks you can install on the door itself.
Yes, a switch that shuts off power to the garage door opener would make it unresponsive to commands from a remote (or anything else, such as a hardwired button). In some models, it may be possible to wire a separate switch to disable only the remote receiver while maintaining the functionality of wired buttons.
You may also look into setting a new code for your opener - this may not help but you should at least ensure the current setting isn't simply the factory default.
Another option, aside from replacing the whole opener with a new model that is more secure, might be to get an aftermarket remote kit and replace the built-in remote system. These are wired like a button control, but come with their own remote receiver and transmitters.
An electrician or garage door specialist should be able to help you with these.
After disengaging from the motor, most garage doors have a sliding lock. Disengage, and lock. You cannot open the door now.
I think you're better off with something that prevents the door from opening by blocking the wheels in the track or throws a bolt from the door through the track. But then also opens itself automatically.
But you have to make sure the default codes won't open your door or else the locks will be triggered to open.
Combining one of these with a power cutoff seems like a really secure solution. What about unplugging the opener??
Most garage doors that I've seen have a pull string to disconnect the motor from the door (it disconnects a tab from the chain). You could pull it at night and engage it again when you needed it.
Edit: This would required the mentioned door lock be used.
A WiFi-Controlled Socket...
...may be just the ticket.
If you have WiFi in your home that covers your garage area, you could use a device such as this or this. Either would allow you to turn on/off the socket into which your door opener was plugged, thereby securing your door opener.
- They both support a full 15A load, so you shouldn't have any issues with that.
- They both can interface with Amazon Alexa, as well as any iOS/Android device, so you could enable/disable it with your phone from your driveway whenever you arrive/leave, or from your Echo via voice command when you get/leave home.
- At least one of them also interfaces with Nest thermostats, so if you use those, you could have it automatically enable/disable your door opener automatically as well (if it sensed you were away, it could turn off the door opener socket, for instance.)