Human sensor for robbers

recently weved got robbed while we are sleeping. I want to have a circuit that senses intruders if it passes by, does anyone knows thanks. Help is so much appreciated.
 
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This could be very good choice:
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how loud does the sound the sensor creates? its not stated.

The one I posted is a motion detection sensor. It does not make sound. It only gives out an electronic signal when it detects motion.
 
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