DuoFern radio transmitter UP 9497Radio-capable flush-mounted transmitter for roller shuttersRadio roller shutter control with existing switch or button - really easy to convert!Use your switches or buttons to control roller shutters from now on! It's really easy with the flush-mounted radio transmitter. This transmitter makes your switches or buttons radio-capable in no time.Thanks to its extra slim design with a depth of just 11 mm, the radio transmitter can be easily installed behind existing switches or buttons. And thanks to the integrated battery, the radio transmitter is independent of the mains.With this radio transmitter for roller shutters, blinds, awnings and lighting, you can conveniently control up to 16 DuoFern receivers in max. 2 groups manually via radio!- Ideal for using existing switches or buttons for DuoFern radio- Thanks to the slim design, the roller shutter radio transmitter can be easily installed behind existing switches/buttons- Manual operation of up to 16 DuoFern receivers in a maximum of 2 groups- Thanks to battery operation, no power supply is required for the flush-mounted transmitter