Catch your culprit with microwaves! A real mi- crowave doppler radar sensor that will detect a human up to 12 feet away. True microwave Doppler shift operation. Unaffected by heat, light, sound, humidity or temperature. The unit sends out a microwave signal and looks for a return, a moving object will reflect back some microwave energy and the kit detects it. Since microwaves (no, you won't get cooked or burned by them!) are used, heat, light, sound or vibration will not affect the sensor. This makes it ideal for car and home alarms, outdoor and garage light operators, animal-in-your-garbage alarms and tons more ideas limited only by your imagination. The MD-3 is a great introduction to the basic principles of our Speedy Personal Speed Radar and you can use it to investigate the properties of microwaves. Kit includes detailed instructions, theory of operation and lots of applications and hook-ups.

Runs on 9-12 VDC. Comes with our case and knob set, which makes for a nice finished project.