User's Guide
8 
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 Expanse XP20 User Guide
Mounting guidelines in meters
Offset Height
(acceptable range)
2.0* 3.5 (2.5–5.5)
2.5* 3.5 (2.5–5.5)
3.0 3.5 (2.5–5.5)
3.5 3.5 (3.0–6.0)
4.0 4.0 (3.0–7.0)
4.5 4.5 (3.5–7.5)
5.0 4.5 (3.5–8.0)
5.5 5.0 (4.0–9.0)
6.0 5.5 (4.5–9.0)
6.5 6.0 (4.5–9.5)
7.0 6.5 (5.0–10.0)
7.5 8.0 (5.0–10.0)
8.0 8.0 (5.0–10.5)
8.5 8.0 (5.5–10.5)
9.0 8.5 (5.5–11.0)
9.5 8.5 (5.5–11.5)
10.0 9.0 (6.0–12.0)
10.5 9.0 (6.0–12.0)
11.0 9.0 (6.0–12.5)
11.5 9.5 (6.5–13.0)
12.0 10.0 (6.5–13.0)
12.5 10.5 (6.5–13.5)
13.0 10.5 (7.0–13.5)
13.5 11.0 (7.0–14.0)
14.0 11.0 (7.0–14.0)
14.5 11.5 (7.5–14.5)
15.0 11.5 (7.5–15.0)
15.5–70 12.0 (7.5 to  <offset)
Additional information
 ˿
If the roadway is frequently used by tall vehicles, consider 
choosing a higher mounting height to help avoid occlusion.
 ˿
Don’t use an oset of less than 6 ft. (1.8 m). Also, the sensor can 
be up to 230 ft. (70.1 m) from the road, but don’t go out that far if 
you can avoid it; it could lead to decreased accuracy.
 ˿
For best results, choose the mounting height in the Height 
column in the table. If you can’t, just keep it somewhere in the 
acceptable range.
Occlusion and multipathing
These are two problems you might face while using a radar 
detector.
Note. Some 
countries, such as 
the UK, have their 
own variant of these 
mounting guidelines 
due to dierences 
in road layouts and 
trac profiles. Please 
consult with your 
local Wavetronix 
oce to ensure 
you are installing 
to the correct 
local guidelines.
* reduction 
in number 
of reported 
speeds. 
Recommended
Warning. Choosing 
a mounting 
height outside 
that range could 
negatively aect 
sensor accuracy.










