FORMULER GTV-BT1 remote
Firmware version: 0.5.38
App version: 1.2.1
Integrated Volume Control is now available on the Formuler BT1 Remote.
For Formuler BT1 premium remotes, the long-awaited Integrated Volume Control feature is now available. You may now use the BT1 remote to control the level of external audio devices like as TVs, AVRs, and Soundbars without changing the mode on your BT1.