This device can detect motion within a 16 feet radius.  It works off of radar technology.  No pir motion sensors, no thermal sensors, no any capacitance circuits, this is brand new to the field.
Mr. D is a new type of sensor that detects in the frequencies between 10hz to 20ghz. This is a very sensitive and highly accurate sensor and has been tested in the field. It features a low tone alarm, activity indicator, and a power led.  Very user friendly. Put in a area where you think there may be activity and watch to see if it captures the motion.
 
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