Switch fan on for 15 minutes then off

[ProjektC]

Hello,

I want to have a switch where a 433 socket runs for 15 minutes.
After 15 minutes the 433 socket should be off.
I want to operate a Ventinaltor with it.

If I press the switch on the tablet, the fan should run for 15 minutes and then go out again.

[heggink]

Off delay?

Sent from phone.