Basically all DuoFern products can be combined. Compatible remote controls are for example our DuoFern handheld transmitter type 9491, 9491-2, 9491-5, an overview of the differences between the individual handheld transmitters can be found at here.
The Troll can of course also be used with the HomePilot type 9496-3 or the Bridge Type 9492 can be controlled via the HomePilot app.
If the HomePilot is registered, the Troll Comfort DuoFern should be operated as a receiver. To do this, select setting 1 (receiver mode) under menu item 9-9-2.