DIY Smart Curtain Transformation Guide: Instantly Turn Traditional Curtains into Smart Curtains with Shelly 2.5

Using the Shelly 2.5 smart relay, you can quickly transform traditional wired motorized curtains (such as roller blinds or shutters) into smart curtains, supporting App, voice, and automated control.manuals+2

Basic Materials List

• Shelly 2.5 smart dual-relay

• Traditional motorized curtain motor (must feature "up" and "down" bidirectional power lines)

• Smartphone and WiFi network

• Basic tools: flathead/Phillips screwdrivers, voltage tester, and other safety equipment

Conversion Steps

1. Safe Power Off
   Cut off the main power supply before starting work to ensure safety.youtubemanuals

2. Remove Traditional Wall Switch
   Remove the existing curtain switch panel and locate the "L" live wire, "N" neutral wire, and the motor's "up" and "down" control wires.manualsyoutube

3. Shelly 2.5 Wiring

   • Connect the live and neutral wires to the "L" and "N" terminals of the Shelly 2.5, respectively.manuals+1

   • Connect the motor's "up" and "down" control wires to "O1" and "O2" (the Shelly 2.5 dual output terminals).bujarra+1

   • The wall switch can optionally be connected to the Shelly's "SW1" and "SW2" for local manual control.bujarra+1

   • If the motor has a limit switch, ensure it is retained to prevent overshooting.manuals

4. Reinstall Panel and Test Power
   The compact Shelly 2.5 can be embedded behind the panel or installed in a wall box. After installation, replace the panel, power on, and use the Shelly Cloud App to pair the device.manuals+1youtube

5. Software Configuration

   • Select "roller shutter/blind mode" in the App to activate curtain mode, where you can set opening/closing ranges, schedules, or automation scenes.bujarra+1

   • Supports Amazon Alexa and Google Home voice commands.manuals+1

Advanced Suggestions

• If the curtains are not yet motorized, you can purchase compatible tubular or rope-pull electric motors for the upgrade.

• If you already have a Zigbee/Z-Wave control system, you can use Home Assistant or MQTT to integrate the Shelly 2.5 into existing smart home scenes.bujarra+1

Notes

• Shelly 2.5 supports AC motors; some DC motors may require a separate adapter.shelly-forum+1

• Ensure sufficient space for heat dissipation; do not subject the Shelly to excessive current for long periods.

• Follow safety regulations during installation; if you are unfamiliar with electrical work, it is recommended to hire a professional technician.

After completing these steps, traditional curtains can be instantly upgraded to smart curtains, allowing for automatic opening and closing via an app or voice control at any time. This is perfect for rentals and home renovations.manuals+2