Is it possible to use a universal remote control such as the Logitech “Harmony” with your box?
Basically yes. The desired remote control needs to be able to learn infrared (IR) codes. For the model “Harmony” from Logitech take a look at the link below: https://support.myharmony.com/en-ch/adding-a-device-thats-not-found-in-the-harmony-database