TSB #: 210705
NOTICE REGARDING SRF SENSORS ON IQ PANEL 2 AFTER AC POWER FAILURE
We recently discovered that under certain conditions SRF sensors (319MHz, 345MHz, 433MHz) may not report
to the IQ Panel 2 correctly.
For IQ Panel 2’s that have performed an SRF sensor test and then experienced a subsequent AC power failure,
SRF sensor state changes may not be properly handled by the panel and may not generate normal zone events
(open, close, alarm, tamper, etc).
This issue is limited to SRF sensors on IQ Panel 2’s running 2.5.3, 2.5.4, 2.5.5 or 2.6.0 software only. PowerG
sensors, Z-Wave and Bluetooth devices are unaffected and will continue to operate as expected.
SRF sensors will return to normal operation immediately following the first Arm/Disarm cycle after the AC power
To prevent this issue from reoccurring, a “Panel Reboot” should be performed at any point after the installation
process is complete. To minimize impact to the homeowner, a remote “Panel Reboot" is recommended in the
As a proactive measure, an automatic reboot will be issued to affected IQ Panel 2’s. The reboot will be executed
during randomized daytime hours and only for panels that are in the disarmed state.
Software version 2.6.1 addresses the root cause of the SRF issue.