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  • Somfy Decorator Sonesse/IGC Dry Contact Switch — Manual

    September 08, 2026 1 min read

    Installation and wiring manual for the Somfy Decorator Sonesse/IGC dry contact switch, used with Sonesse 30 dry-contact motors.

    Full text manual (for reference)

    Overview

    The Somfy Decorator Sonesse/IGC Switch is a wall-mount control switch designed for use with Somfy's Sonesse 30 dry-contact motors. It features a 4-wire terminal block for easy connection to the motor, plus a secondary 4-wire terminal block for connecting third-party controllers.

    Part Numbers

    • 1800219 — White
    • 1800220 — Ivory

    Mechanical Specifications

    Spec Value
    Overall Dimensions L: 4 1/2 in. x W: 2 3/4 in. x D: 1 1/2 in.
    Mounting Standard single-gang electrical box

    Connection & Operation

    1. Connect the Sonesse 30 motor to the low-voltage terminal block as indicated on the switch.
    2. Press UP to raise the window treatment, DOWN to lower it. Press STOP at any time to halt movement.
    3. For third-party control, use the secondary terminal block: a momentary contact between the UP and COM terminals activates the Up command; DWN and COM activates the Down command; STOP and COM activates the Stop command.
    4. The Dry Contact Switch can be used to establish the following motor settings:
      • Upper and lower motor limits
      • Intermediate stop (MY) position
      • Motor speed control
      • Rollup and tilt features

    Terminal Reference

    Terminal Function
    U UP
    S STOP
    D DWN
    C COM

    Manufacturer Notice

    Somfy Systems, Inc. reserves the right to change, update, or improve this document without prior notice.