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Protective Loop Anti theft device Circuit

2016-09-11 15:53  
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Ananti-theft system is any device or method used to prevent or deter the unauthorized appropriation of items considered valuable.Theft is one of the most common and oldest criminal behaviours. From the invention of the first lock and key to the introduction of RFID  tags and biometric identification, anti-theft systems have evolved to match the introduction of new inventions to society and the resulting theft of them by others.Any momentary break in the protective loop or tripping of the normally closed vibration sensor, causes alarm to sound for 20 seconds.If the circuit is open all the time, the alarm will sound continuously.Anti-theft systems are designed to raise the difficulty of theft to an infeasible (but not necessarily impossible) level. The kind of system implemented often depends on the acceptable threshold for theft.

Antitheft device