DuoFern smoke alarm for effective fire protection The radio-capable fire protection sensor DuoFern smoke alarm comes from the ESYLUX PROTECTOR K 9 V series and also comes with a DuoFern radio module. Smoke alarms are the most effective fire and smoke protectors. This smoke alarm from Rademacher opens up completely new possibilities and functions thanks to its radio capability, making your home even safer. It is a smart home smoke alarm that can be integrated into the HomePilot® smart home system. He immediately reports detected smoke by radio to the HomePilot® or to up to 10 DuoFern actuators, which must be connected to it beforehand. In addition, it checks its battery status every day and also transmits this to the central control unit. Smart control allows entire scenes to be triggered and set up, in which multiple devices execute predefined responses at the same time. For example, when smoke is reported, the lighting is turned on and the shutters are raised. This safeguards escape r