S9 Brightness

A macOS menu bar app that sets the hardware backlight of Samsung smart monitors (such as the ViewFinity S9) over your local network.

Requirements

• macOS 14 or later
• Xcode 27 or later to build
• The monitor on the same network as your Mac, with IP Remote turned on: Settings › Connection › Network › Expert Settings › IP Remote

Download

Get the signed and notarized DMG from Releases, open it and drag S9 Brightness to Applications.

Build

Open S9Brightness/S9Brightness.xcodeproj in Xcode and run the S9Brightness scheme. Run the tests with ⌘U.

Use

On first launch a setup window finds the monitor. Click Connect, then select Allow on the monitor. Adjust brightness from the sun icon in the menu bar. Right-click a preset to set it to the current brightness.

Samsung's IP Control interface is undocumented and may change with firmware updates. This project is not affiliated with Samsung.

License

MIT, see LICENSE.