My iOS app supports connecting to Varia RVR315, RTL515, and RCT715 bike radars. It works fine, I can display approaching threats etc. I would like to be able to control the 515 and 715 tail lights though and there doesn't appear to be a publicly available control point for that. Is this because is only available after pairing and therefore something that is only available for Garmin Edge devices, or is there a documented procedure for this?