User's Manual

7 | P a g e
The In-Car unit is designed with an efficient antenna that can pick up sensor signals
better than a usual smartphone, enabling good signal reception from the tire sens-
ors. Keep the In-Car unit in the cab and fix the Repeater in the center of the Trailer
for optimal functioning of FOBO Ultra. You may remove it for other sensor
operation purposes, such as sensor position rotation and sensor disabling but place it
back once the sensor operation is completed. Note that In-Car unit is not water-
proof.
To conserve battery life, the In-Car unit/Repeater will go into „sleep‟ mode after it
detects that the vehicle has been stationary for more than 15 minutes. It will „wake
up‟ once it detects that the vehicle moves. You can still receive your tire pressure
and temperature data by accessing the FOBO Ultra App on the smartphone, even
when the In-Car unit is asleep. This is due to FOBO Ultra sensor‟s continuous
operation of 24 x 7 which allows you to receive an alert even when the vehicle‟s
ignition is switched off.
The In-Car unit/Repeater is also designed to be a secondary alert device in the
event of a deflated tire. This is to cover situations when you do not have your
smartphone with you while driving or if your smartphone‟s battery is dead. When
there is a tire pressure alert, the In-Car unit/Repeater will produce an audible and
visual LED alerts to inform you of a tire pressure problem.