A motion sensor comprises a touch screen, and a motion indictor proximate to the touch screen, the touch screen displaying: an adjusting bar indicating a threshold at which motion is detected, and {HEAD ~ a level bar} indicating {TAIL ~ an amount} of currently measured motion 
A motion sensor comprises a touch screen , and a motion indictor proximate to the touch screen , the touch screen displaying : an adjusting bar indicating a threshold at which motion is detected , and { HEAD ~ a level bar } indicating { TAIL ~ an amount } of currently measured motion
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH