Security alarm device for doors and windows

Abstract

The invention discloses a security alarm device for doors and windows. The security alarm device comprises a battery, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first potentiometer, a second potentiometer, a third potentiometer, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first signal output port, a second signal output port, a touch switch and an amplifier. Compared with the prior art, the security alarm device for the doors and the windows has the advantages that by means of mounting the touch switch at the position of a crack between a door and a door frame, when the door is opened illegally, a circuit is automatically triggered to send alarm sounds, and accordingly, the purpose for security is reached; the security alarm device for the doors and the windows is simple in circuit structure, low in cost, small in size, convenient to mount and beneficial to popularization and promotion.

Description

technical field [0001] The invention relates to a security facility, in particular to a door and window alarm device for security. Background technique [0002] According to the interpretation of the current Chinese dictionary, the so-called safety means no danger, no infringement, and no accidents; the so-called precaution means precautions and precautions, and precautions refer to making preparations to deal with attacks or avoid being victimized, and precautions refer to prevention and protection . Based on the above explanations, is it possible to define safety precautions as follows: prepare and protect to deal with attacks or avoid victims, so that the protected objects are in a safe state where there is no danger, no infringement, and no accidents. It is obvious that safety is the purpose, and prevention is the means. To achieve or realize the purpose of safety through the means of prevention is the basic connotation of safety prevention. Anti-theft, as the name sug...

AI Technical Summary

Problems solved by technology

However, in the prior art, locks with complex structures are mostly used for anti-theft of doors and windows, and no matter how strong the locks are, they are still easy to be pried open. Therefore, there is room for improvement.

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