DuoFern radio transmitter for flush-mounted installation - powered either by an external power supply or by a battery This radio transmitter makes a connected switch instantly suitable for radio control. Due to its particularly flat shape, the radio transmitter can be installed under existing switches. Depending on the environment, power can be supplied by a 12 V DC connection or by a CR2032 battery. The radio transmitter is suitable for shutters, blinds, awnings and also lighting. It can control up to 16 DuoFern receivers in a maximum of two groups via radio waves, without the need for additional components. It can also be integrated into the HomePilot® system to make it a smart home radio transmitter. In this way, the switch controlled by the radio transmitter can be integrated into scenes or controlled from a smartphone. Functions / compatibility: - Can be connected to HomePilot® - control via app possible - Voice control via Google Assistant and Amazon Alexa possible - You can cont