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Anonymous users2024-01-24The way to tear off the wire is not good, you only need to connect the positive and negative poles of the battery to the doorbell, and connect a plastic sheet with a rope on the door to install at either end of the battery, because the plastic sheet is an insulator that does not conduct electricity, so the door will not ring when it is closed, but after the door is opened, the rope will tear the plastic sheet open, and the power will ring when the power is turned on.
You can totally go and buy a ready-made set.
It's not okay to buy a set of home alarms, the door magnet in the alarm can call the police when they are illegally opened, notify the residents, notify the community property, and notify the police (but you need to greet the local police station in advance to receive the police call).
It's very simple, when no one is set to normally open, install a button inside, press it once when you enter, and the door will automatically close.
The ventilation door must be installed outside the current door, you have to see if there is space on the wall of the door you are installing now, if your current door is open outward, it is very troublesome, the ventilation door should be opened outward, and the inner door should be opened inward.
The paper shell is still hardcover. The paper shell is designed free of charge and charged according to the quantity. The larger the volume, the cheaper.