INTRUDER ALERT DIY electronics kit with options: Slot sensor / motion sensor / light sensor
Check us out at:
http://www.engineeringshock.com/
http://www.paintballprops.com/
http://electroniclessons.com/
Check us out at:
http://www.engineeringshock.com/
http://www.paintballprops.com/
http://electroniclessons.com/