Somfy Generic RTS and DCT

Control Somfy RTS with panache !
MSRP: $159.00
Domosapiens Inc.
Version: 1701
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One driver for ALL your RTS needs !

Using an elaborate timing model, this driver set enables you to effectively control one-way Somfy RTS and DCT (Dry Contact) blinds/motors using one or more of the following control devices:

  • Somfy myLink (16 channels each)
  • Somfy RS485 RTS Transmitter (16 channels each)
  • Somfy URTSI II (16 channels each)
  • Somfy URTSI (5 channels each)
  • Somfy RS232 to RTS with X-10 (16 channels)
  • Dry contact motors (DCT - 2 or 3 contacts per motor for up/down/stop or open/close/stop)

This version of the driver implements a *new* architecture where the ‘Somfy Multi Interface’ driver is new and replaces the former ‘Generic V3 Somfy Main Interface’ driver.  Several Multi Interface drivers may be present in the same project.  This significantly increases the flexibility in connecting several RS485 RTS transmitters, several URTSI II, several clusters of myLink or even an elaborate mix of several of the above in the same project.  In addition, the legacy ‘Generic V3 Somfy RS485 Add-on’ driver for RS485 RTS Transmitters is no longer required, making this popular option simpler to install.  A new ‘Somfy 9600 Baud Conversion’ driver is now used for older 9600 baud devices, such as URTSI and URTSI II.  See the section on Migrating to the New Multi Interface Driver below for more details.



  • An elaborate timing and programming model estimates the current position and status of each blind at all times, based on timing values provided by the installer.
  • New blind features in OS 2.9 are supported, including setting the blind to a % open or closed.
  • Venetian blinds/louvers are supported in addition to regular blinds. Dual operation (roll and tilt) is also supported via a separate driver when using the RS485 RTS Transmitter.
  • More than one Multi Interface drivers may be installed in the same project, allowing for very complex Somfy RTS/DCT control schemes (only one license is required per project).
  • Blinds drivers may be positioned in the appropriate rooms for easier Navigator access.
  • Somfy myLink transmitters are supported using a Wi-Fi connection.
  • Somfy RS485 RTS Transmitters (5061182) are supported, including setting IP and programming the channel.
  • Multiple URTSI II devices are supported if connected in an RS485 network.
  • Property to allow multiple sends (retransmissions) when using URTSI II and RS485 Transmitters.
  • Property to allow feedback to individual blinds when grouped RTS channels are used.
  • Support for up to 30 driver scenes (new concept).
  • RTS485 Action to set motor in PROG mode.
  • RTS485 Action and programming command to send TILT (+ or –) with optional amplitude.
  • Dry contact operation (2 relays per motor with an optional 3rd STOP relay) is supported for up to 16 motors (32 to 48 relays overall).
  • Driver tested with Global Caché devices (iTach and iTach Flex) to allow for more connection possibilities.
  • Interface driver stacks consecutive commands so that delays between commands are observed, as per Somfy requirements.
  • Programming control is available to set blinds to specific positions.
  • Programming feedback is provided on current blind position and status.
  • Action (“Print Blind Report”) to print a summary of all blinds configured in the project.

IMPORTANT NOTE FOR V16+: previous versions of this driver supported Bond Bridge and Somfy TaHoma devices, which is no longer the case.  Existing and already configured installations will retain the ability to support the Bond Bridge and Somfy TaHoma.  For new installations, please use the upgrade paths outlined below:

  • For Bond Bridge: use the new Domosapiens Advanced Blind Control driver available on DriverCentral (see below for special licensing).
  • For Somfy TaHoma: use the official free driver available from Somfy Systems or Control4.  If you plan to control one-way RTS devices using TaHoma and wish to use the Control4 slider model, you may install the new Domosapiens Advanced Blind Control driver (see below for special licensing) and ‘encapsulate’ the TaHoma blind drivers assigned to RTS devices.

If you already have a valid license for the current Somfy Multi Interface Driver in your project (likely if you are reading this), the same license will also activate the new Domosapiens Advanced Blind Control driver (the reverse is not true, however).

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Included in the Download package.  Read it !  It has changed significantly, as well as the overall architecture of the driver.

10.0.0   Migration to driverCentral 

11.0.0   Support added for blinds with tilt, better IP, new contacts, issues fixed

12.0.0   Infrastructure update and all documentation now included in driver (May 3, 2019) 

14.0.0   New architecture with Multi Interface driver (April 12, 2020) 

15.0.0   Licensing update (October 7, 2020)

16.0.0   Device support streamlined (December 2, 2020)

17.0.0   Added 2 Disabling Contacts, ability to reverse Up/Down (May 26, 2021)

17.0.1   Minor issues fixed (August 2, 2022)