They are the motor of the SOMFY IO Wireless Technology
Simply (without crank holder) for pipes ∅ 50mm & ∅ 60mm & ∅ 63mm & ∅ 70 mm & for Pipe couloir ∅ 78mm & ∅ 85mm (rolling shutters & awning)
Presentation Synchroniz FR-DE-IT-NL Compatibles
IO 2 technology words (Behold the Glossary) transmitting frequency 868 Mhz
with duplex communication (motor control) and devices multitude interface
and functions of the building in the Mobile phone.