This article refers to the address: http:// Connecting a variable resistor (potentiometer) in series can be used for audio control . In addition, it is obvious that if the 3 terminal (output terminal) of A1 is not connected to the 5 terminal of A2, it is connected to the 4 terminal of A2 (reset terminal). Is a beat generator.
Mechanical Burglary Safes are safes that have passed Chinese 3C certificate and use classical Mechanical Lock to open the safes, with high safety and perfect performance.
Details:
Equipped with classical mechanical locks;
These safes are anti-drilling, anti-burglar and anti-force;
Dual-system protection is contained in safes;
Accurate scale and easy to turn the turntable;
It can`t be opened unless the password has been known;
Not easy to be stolen for the opening process is quite complex.
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