MOTION DETECTION RANGE ARLO PRO 4

[TR52]

I HAVE A ARLO PRO 4 MOUNTED ON THE SIDE OF MY HOUSE 8-1/2 FEET ABOVE GRADE AND IS POINTED SLIGHTLY DOWNWARD. ADDITIONAL INSTALLATION MATTERS ARE AS FOLLOWS: 1) IT FACES NORTH WITH NO DIRECT SUN INTERFERENCE, 2) IT IS LOCATED 25 FEET FROM MY WIFI ROUTER INSIDE MY HOUSE (2 X 4 WALL WITH WOOD SIDING) 3) MOTION SENSITIVITY IS SET AT 100%, 4) ACTIVATION ZONE ONLY INCLUDES MY DRIVEWAY SO THE AREA IS NOT MORE THAN 25 FEET FROM THE CAMERA, AND 5) THE BATTERY IS 100% CHARGED. 

PERFORMED ACTIVATION TEST AND THE CAMERA WILL ONLY DETECT MOTION WITHIN 12 FEET OF THE CAMERA. THE ARLO MOTION DECTECTION RANGE CHART INDICATES THAT THE PRO 4 HAS A MOTION SENSING / ACTIVATION RANGE OF 25 FEET. WHY WON'T THE ARLO PRO 4 SENSE MOTION FURTHER THAN 12 FEET FROM THE CAMERA??