Wireless theft-proof alarm lock
A technology of anti-theft alarm and heaven and earth lock, which is applied to electric alarm locks, alarms that rely on interference with short-wavelength radiation, building locks, etc., can solve the problems of limited warning range, retaliatory destruction and failure of thieves, and achieve a large warning range. , Avoid false alarms, strong concealment effect
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[0016] The trigger module MK is powered by 6 pins, 1 pin is grounded, 2 and 3 pins are trigger terminals, 2 pins are level trigger terminals, 3 pins are pulse trigger terminals, 4 pins are module de-intervention terminals, 5 pins are output terminals, C6 is a dry filter capacitor. The pins 1-8 of the encoding unit IC are address encoding terminals, each pin can be suspended or connected to a low potential, and pin 9 is the ground terminal; pins 15 and 16 are connected through resistor R4 to provide the natural frequency for the IC, 17 The pin is the output end, which is connected with the modulation circuit, the 10-12 pin is the encoding end, and the 14 pin is grounded. The working logic and working process of the trigger module MK are: when pins 2 and 3 are all low, the whole machine does not work, and pin 5 has no output; when pin 2 is high and pin 3 has pulse input, pin 5 outputs for a period of time 20S high level. The alarm signal transmitter circuit of the present inve...
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