User's Manual

23 | P a g e
6.8 Signal low or sensor missing
You will receive this emergency alert when the In-Car unit/Repeater fails to
communicate with the tire sensor. It could be the sensor signal is blocked,
sensor unit damaged or missing from the tire. If confirmed the sensor is
damaged or missing, you could disable the sensor in order to continue using
FOBO Ultra with remaining working sensors. Please purchase the sensor
replacement immediately. It is not advisable to continue driving without
FOBO Ultra actively monitoring one or more of your vehicle tires.
6.9 Pressure Drop too fast
For fast air leak, FOBO Ultra smartly alerts the user when it matters the most.
FOBO sensors sense the pressure every 8 seconds, if the pressure changes
more than 15 Kpa OVER this time frame, the sensor will immediately send
an updated pressure signal to the phone which will trigger an alert on the
FOBO Ultra App in the event the pressure has breached the upper or lower
limit (Applicable to all 3 alert levels).
If there is a sudden drop in pressure (say from 200 Kpa to 0 Kpa) in LESS
than 8 seconds, the App will not alert you because the App will treat this as
though you have removed the sensor to inflate your tire. The system is
designed this way as we believe that if there is an instant drop to 0 pressure,
the user would have already felt it before getting any alert from the TPMS
(like getting a burst, or hitting a kerb/drain, etc.)
7 In-Car unit/Repeater audio & LED alerts
The In-Car unit/Repeater will produce different tones and LED flashes for different
situations. For repetitive alerts, you can stop the alerts by pressing the In-Car unit
side button once. In case you have forgotten the location of the problematic tire,
you can short press the side button another time to re-produce the alert one time.
Wake up – unit will produce “di da” tone once with LED blinking sequentially for
all four tire indicators. This shows that In-Car unit is awake and operational.
Sleep – unit will produce “daaa” tone once. No LED blink. This shows In-Car unit
is going to sleep and not operational. In-Car unit goes to sleep to conserve battery
when vehicle is not moving for a long time. However the sensors will still be
operational 24x7 and continue to monitor and alert to your smartphone in case of
flat tire.