Yes. Promotional codes apply to the whole range available on SBB Mobile (with the exception of Saver Day Passes).
In addition, there may also be advertising campaigns or mailings for specific offers and promotional codes for specified items.
Important: Unfortunately, it is not possible to deduct only partial amounts when redeeming the promotional code; i.e. any amount remaining is forfeited. This means you are best off using the code for payment when the ticket costs reach or exceed the value of the promotional code.