RITTO TwinBus 4760 or 14760 Door Intercom Module Platinum Colour with Mounting Frame and Seals Officially Unused Without Original Packaging : Amazon.de: DIY & Tools
Schneider Electric RITTO TWINBUS POWER SUPPLY UNIT - buy at digitec
Handsfree video intercom System M by Ritto | STYLEPARK
Ritto | 1492102 | Built-in speaker TwinBus - Door loudspeaker 0-button Black 1492102 | Door loudspeaker