Shelly Plus i4 DC powered by Spectoda
Four-input wall-box module for scene control and fast button integration into the Spectoda ecosystem.

Shelly Plus i4 DC powered by Spectoda is an input wall-box module for four button or switch inputs. In this product family, it is exclusively the DC variant intended for retrofit under a switch and for fast connection of local inputs into the Spectoda ecosystem.
This is not a standard retail Shelly variant with the original firmware. Devices in this branch use Spectoda firmware, which allows them to work in the Spectoda ecosystem and follow our scenarios, logic, and automations.
The AC variant does not belong to this product branch. For mains 230 V inputs, we use our own SC 4i A controller.
Key features
Section titled “Key features”- 4 separate inputs for buttons or switches
- power supply
5-24 VDC - compact dimensions
37 x 42 x 16 mm - suitable for mounting in an installation box
- intended for scene control, triggering actions, and integrating standard wall controls
Technical specifications
Section titled “Technical specifications”| Parameter | Value |
|---|---|
| Power supply | 5-24 VDC |
| Number of inputs | 4 |
| Outputs | no relay outputs |
| Mounting | wall-box / installation box |
| Dimensions | 37 x 42 x 16 mm |
| Typical use | scene control, trigger inputs, button retrofit |
Connection and wiring
Section titled “Connection and wiring”Official Shelly documentation lists simple DC wiring with four inputs for this variant.
| Terminal | Meaning |
|---|---|
SW1, SW2, SW3, SW4 | inputs for buttons / switches |
+ | positive pole of 5-24 VDC power |
⊥ | negative pole / ground |
In practice, this means:
- buttons connect to inputs
SW1-SW4 - the module uses low-voltage DC power
- before installation, keep the correct polarity and do not use AC wiring from another product branch
Integration with Spectoda
Section titled “Integration with Spectoda”- local buttons can trigger scenes, automations, and other actions in a Spectoda project
- suitable for retrofitting existing switches without changing the control logic in the space
- suitable as a compact input point where no local relay output is needed
Official manufacturer documentation
Section titled “Official manufacturer documentation”Official Shelly documentation for this variant includes a wiring diagram, printed user guide, and an EU declaration of conformity.