Omron WT30 Operation Manual page 33

Installation
If the Antennas are installed in locations with relatively high ceilings and a
lot of open space, even if there is no direct line of sight between the Anten-
nas, if one of the Antennas is installed in a high location, communications
may still be possible via radio waves that are reflected off the ceiling.
2. Install in as high a location as possible.
As mentioned in the preceding paragraph, if the Antennas are installed in
high locations, because the space surrounding the Antennas will be more
open, there will be less influence from obstacles, and the radio waves will
propagate more easily.
High Antenna
3. Do not place obstacles (especially metal objects) near the Antennas.
If there are obstacles near the Antennas (in particular, in the direction of
radio wave propagation), the radio waves may not be propagated due to
the influence of the objects. Metal objects have the greatest influence as
they reflect radio waves, whereas glass and plastic objects allow the waves
to pass through and so have the least influence. Be sure to install Anten-
nas at least 30 cm away from any obstacles.
4. Cable Loss in Magnet-base Antennas
Loss occurs in the cable when using WT30-AT001 Magnet-base Antennas.
Therefore, the maximum communications distance is approximately 50 m
indoors, which is shorter than for Pencil Antennas.
5. Cable Bending Radius
The minimum bending radius for WT30-AT001 Magnet-base Antennas is
38 mm. Also, do not bend the cable at points less than 34 mm from the end
connected to the WT30 Terminal or at points less than 40 mm from the end
connected to the Antenna.
The minimum bending radius for WT30-AT002 Flat Diversity Antennas is
50 mm. Also, do not bend the cable at points less than 23 mm from the end
connected to the WT30 Terminal or at points less than 20 mm from the end
connected to the Antenna.
Cable Bending Radius and Dimensions
34
R38
WT30-AT001
Magnet-base Antenna
Radio wave energy
Obstacle
(Unit: mm)
23
R50
WT30-AT002
Flat Diversity Antenna
Section 2-1
15