Moneual RYDIS MR7700 User Manual page 21

3. Pull out one battery from the remote controller.
4. While pressing the OK button from the remote controller, re-insert the battery in.
The OK button of the remote controller will turn on and then off in red and blue in turn.
Synchronization will only take a few seconds to be completed.
If the main body is 3 meters or more away from the remote controller, synchronization will fail.
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OK
MANUAL
5. Pull out and then re-insert the battery of the remote controller.
This will complete synchronization.
RYDIS MR7700 User Manual 21