Device identification
- Device name: Shelly Plus i4DC
- Device model: SNSN-0D24X
- Device SSID: ShellyPlusI4DC-XXXXXX
Short description
Shelly Plus i4DC is a smart Wi-Fi switch input that allows you to manually activate or deactivate any created scene, run synchronized actions, or execute complex trigger scenarios. You can use Shelly Plus i4DC to control other connected Shelly switches, sensors, or HTTP and MQTT-controlled devices. Small enough to fit behind every wall switch, Shelly Plus i4DC can show the status and control the action of four inputs.
You can access and monitor Shelly Plus i4DC remotely from any place where you have internet connectivity, if the device is connected to a Wi-Fi router and the Internet.
You can retrofit the device into standard electrical wall boxes, behind power sockets, light switches, or into other places with limited space.
Shelly Plus i4DC has an embedded Web Interface that you can use to control it and set it up.
Main applications
- Residential
- MDU (Multi Dwelling Units - apartments, condominiums, hotels, etc.)
- Light commercial (small office buildings, small retail/restaurant/gas station, etc.)
- Government/municipal
- University/college
Integrations
- Alexa (through a virtual device routine)
Simplified internal schematics
Device electrical interfaces
Inputs
- 4 switch/button inputs on screw terminal: SW1, SW2, SW3, and SW4
- 3 power supply inputs on screw terminals: 1 + and 2 Ʇ
Outputs
N/A
Add-on interface
- Shelly proprietary serial interface
⚠ CAUTION! High voltage on the add-on interface when the device is powered!
Connectivity
- Wi-Fi
- Bluetooth
Safety features
- Overheating protection
User interface
Inputs
- One (Reset) button
- Press and hold for 5 seconds to enable device access point and Bluetooth connection.
- Press and hold for 10 seconds to factory reset the device.
Outputs
- LED (monocolor) indication
- AP (Access Point) enabled and Wi-Fi disabled: 1 second ON / 1 second OFF
- Wi-Fi enabled, but not connected to a Wi-Fi network: 1 second ON / 3 seconds OFF
- Connected to a Wi-Fi network: Constantly ON
- Cloud is enabled, but not connected: 1 second ON / 5 seconds OFF
- Connected to Shelly Cloud: Constantly ON
- OTA (Over the Air Update): ½ sec ON / ½ sec OFF
- Button pressed and held for 5 seconds: ½ sec ON / ½ sec OFF
- Button pressed and held for 10 seconds: ¼ sec ON / ¼ sec OFF
The list above starts with the initial device status and the lowest priority. Every next state cancels the previous one.
Specifications
| Type | Value |
|---|---|
| Physical | |
| Size (HxWxD) | 37×42×16 ±0.5 mm / 1.46×1.65×0.63 ±0.02 in |
| Weight | 17 g / 0.6 oz |
| Mounting | Wall box |
| Screw terminals max torque | 0.4 Nm / 3.5 lbin |
| Conductor cross section | 0.5 to 1.5 mm² / 20 to 16 AWG |
| Conductor stripped length | 5 to 6 mm / 0.20 to 0.24 in |
| Shell material | Plastic |
| Color | Neon orange (Pantone 2010C) |
| Environmental | |
| Ambient temperature | -20 °C to 40 °C / -5 °F to 105 °F |
| Humidity | 30 % to 70 % RH |
| Max. altitude | 2000 m / 6562 ft |
| Electrical | |
| Power supply | 5–24 VDC |
| Power consumption | < 1 W |
| Sensors, meters | |
| Internal-temperature sensor | Yes |
| Radio | |
| RF band | 2400 – 2495 MHz |
| Max. RF power | < 20 dBm |
| Wi-Fi protocol | 802.11 b/g/n |
| Wi-Fi Range | Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors (Depends on local conditions) |
| Bluetooth Protocol | 4.2 |
| Bluetooth Range | Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors (Depends on local conditions) |
| MCU | |
| CPU | ESP32-U4WDH |
| Flash | 4 MB |
| Firmware capabilities | |
| Webhooks (URL actions) | 20 with 5 URLs per hook |
| Scripting | Yes |
| MQTT | Yes |
Basic wiring diagrams
Legend
| Terminals | Description | Wires | Description |
|---|---|---|---|
| SW1, SW2, SW3, SW4 | Switch/button input terminals | + | 5–24 VDC positive wire |
| + | 5–24 VDC positive terminal | Ʇ | 5–24 VDC negative wire |
| Ʇ | 5–24 VDC negative terminal |
Troubleshooting
...
Web Interface guide
Read the Shelly Plus i4DC web interface guide
Components and APIs
Printed user guide
Shelly Plus i4DC multilingual printed user and safety guide
Compliance
Shelly Plus I4 DC multilingual EU declaration of conformity 2025-07-21
Shelly Plus i4 DC UK PSTI ACT Statement of compliance
Compliance archive
Shelly Plus i4DC multilingual EU declaration of conformity 5 2023-04-26