H212/H106 handheld
The firmware version of the H212/H106 handheld can be see when the unit is in Matching Mode.
On the H212, press and hold the 3 round buttons located on the bottom left together with the Red button, and then release all 4 buttons.
On the H106, press and hold the left two oval buttons together with the Red button, and then release all 3 buttons.
There are 3 lines of text on the screen. The 3rd line contains the firmware version
C220 Receiver
The firmware version of the C220 receiver can be seen by using a H212 handheld that is Matched to the C220. To view the firmware version, put the H212 in Diagnostics mode. Once you are in Diagnostics mode, scroll to the last page to see the firmware version.
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