Currently ACME only supports the use of Light Mode for Apple iPads and iPod touches (Settings > Display  & Brightness). 

If a user wishes to decrease the brightness on their terminal screen, they can either manually adjust the brightness on the iOS device or they can change the brightness set in the POS Config by going to ACME Backoffice Settings > POS Config and modify the Display brightness (percent variable).

Still need help? Contact ACME Product Support by emailing or create a help request at