Flair works with all mini splits, window units, and portable heaters/air conditioners with a remote control that issues infrared commands and shows the device's current state and settings (ex: fan speed, temperature, and/or mode).
I don't have a Remote Control
If your mini split system does not use a remote control, you may be able to purchase a wall-mounted IR receiver and remote control similar to this:
If your remote looks like this one - has a screen that displays the current temperature and state - you'll definitely be able to use Flair to control your device.
If your remote looks like either of these - the screen has no display, or may display temperature, but not state - you may not be able to use Flair's to control your device.
Remote controls containing a screen showing the device's current state and settings are called "idempotent remotes" because they generally send explicit commands, like "turn on power", "turn off power", "set temperature to 73°" or "set fan speed to high". An explicit command doesn't rely on the current state of the device and operates the same way each time it's sent. The Flair App can accurately control devices that use idempotent remotes because the current state is known and the effect of changes is predictable.
Remote controls without a display - or displaying only temperature - are called "incremental remotes" because they generally send "incremental" commands, like "decrease temperature by one degree" or "change to the next fan speed". It's difficult to predict the effect of these commands without knowing the current state of the device.
Note: To determine the compatibility of your remote, please see this article.