The Shelly 4-Channel Decoupler 230V is a four-way isolation module that safely converts an existing 230 VAC signal (e.g., from a wall switch or relay output) into a low-voltage DC trigger signal. This allows AC-side control elements to drive the digital (DC) inputs of Shelly devices without bringing mains voltage directly onto the low-voltage side.
It’s ideal for retrofits and renovations: existing switches remain in place, while the signal is routed to the DC inputs of Shelly Plus/Pro RGBW controllers or to Shelly Plus Uni or Plus Add-on. The four-channel design enables independent handling of multiple circuits within a single compact module.
The module is a wired, passive accessory; actual logic/automation runs on the connected Shelly device. Optical isolation increases safety and reliability in mixed (AC–DC) systems.
About the Shelly brand
Shelly is the smart home brand of Shelly Group. Its portfolio includes Wi-Fi and other technology-based relays, dimmers, meters, sensors, and professional DIN-rail solutions, offering easy installation and reliable automation in home and semi-professional environments.
Key Product Features
- Isolation and control of DC loads: Use existing AC to drive the inputs of DC devices. Suitable for retrofits and external/special switches.
Smart Home Protocols and Platform Compatibility
- Type: passive, wired accessory (non-networked device).
- Compatible Shelly devices: Shelly Plus RGBW PM, Shelly Pro RGBWW PM, Shelly Plus Uni, Shelly Plus Add-on.
- Usage: enables triggering DC inputs from an AC supply with optical isolation; control and automation are handled by the connected Shelly device.
Smart Features
- Safe signal transfer: converts a 230 VAC switching event into a low-voltage DC trigger.
- Multi-circuit control: four independent channels can be wired to separate DC inputs and functions.
- Flexible application: forwards signals from switches, push buttons, or AC-output sensors (e.g., PIR, microwave, gesture, light sensor) to DC inputs.
Electrical Functions
- Input: 230 VAC 50 Hz (L, N conductors)
- Outputs: 4× DC trigger (O1–O4 and common GND)
- Max. output current: 2.4 mA DC
- Power consumption: < 0.6 W
Other Characteristics
- Dimensions (H × W × D): 44 × 34 × 7 mm
- Weight: ~25 g
- Cable length: ~80 mm; stripping: ~5 mm
- Wire colors (4 channels): Brown (I1–I4, AC inputs), Blue (N), Red (O1–O4, DC outputs), Black (GND, DC ground)
- Operating temperature: 0–40 °C; humidity: 30–70% RH; max. altitude: 2000 m
- Housing color: white
- Installation: requires electrical wiring; control is performed by the connected Shelly device
Technical Specifications
- Number of channels: 4
- Input: 230 VAC 50 Hz (L, N)
- Output: 4× DC trigger (O1–O4, common GND)
- Max. output current: 2.4 mA DC
- Power draw: < 0.6 W
- Dimensions: 44 × 34 × 7 mm
- Weight: ~25 g
- Cable length/stripping: ~80 mm / ~5 mm
- Wire colors: Brown (I1–I4), Blue (N), Red (O1–O4), Black (GND)
- Operating environment: 0–40 °C; 30–70% RH; max. 2000 m
- Compatibility: Shelly Plus RGBW PM, Shelly Pro RGBWW PM, Shelly Plus Uni, Shelly Plus Add-on
- Design: passive optical isolation (optocoupler), non-networked accessory
