The same is also true for brightness as well, you can press OPTION+SHIFT+BRIGHTNESSto precisely adjust the brightness of the display of your MacBook. On your device, click the keyboard name “Anker A7726” to connect. Also, make sure to turn down the brightness of the keyboard in a brightly lit room. To adjust the brightness of the keyboard light on your Mac, use the F5 and F6 keys.
This will also allow you to use it longer with backlight in low light conditions.
Press on the biggest button: it will increase screen brightness up to 100%. This one looks like F1 for brightness down and F2 for brightness up. You can turn your mac keyboard backlight by going to system preference and then select keyboard from your Apple Menu, and also you can adjust your illumination up or down on your mac by using Function keys, (F5 & F6).