V3.5 14/08/19
UD0089
Page 756
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4.10.3
SOLENOID VIBRATION
When an iFob is marked as 'iFob Undetectable', the system vibrates the receptor solenoid in an attempt to move the
iFob slightly so as it establishes contact again. therefore you should not be alarmed upon hearing a vibrating sound
every so often from the Traka system. However Traka would recommend you check the event
could an indication of a faulty iFob.
View also...
What happened to iFob Forced from System
(helping to cure iFob Undetectable issues)