Pix Controller DigitalEye Instruction Manual page 8

Mounting the Wireless PIR Motion Sensor
To mount the Wireless PIR motion sensor first
remove the battery door and remove the AAA
batteries. You will see 2 screw holes in which
you can mount a small mounting plate or
screw it to the surface of the mounting area.
Try to keep the sensors at 2' to 3' from the
ground if you want to get the best detection of
targets on the ground.
The range of the PIR detection is 40' to 80'
depending on air temperature and
temperature of the target. The hotter the
target the longer detection range you will
have. For example a car can be seen at a
greater distance.
The RF wireless range back to the DigitalEye
unit is about 100' to 150' depending on line of
sight.