Canon EOS R5C Advanced User's Manual page 180

Browser Remote: Controlling the Camera from a Network Device
13 [REC] button
Touch the button to start recording. The recording
operation indicator changes to [ÜREC] and the
center of the button turns red.
180
The time code will advance while recording.
Touch the button again to stop recording. The
recording operation indicator changes back to
[STBY].
14 Card selection and approximate remaining
recording time
15 [SLOT SELECT] button
Touch to select the other card when both card
slots contain a card.
16 Assignable buttons
17 Assignable functions check
18 Remaining battery charge (A 51)