Shelly Plus i4

Device identification

Device name: Shelly Plus i4
Device model: SNSN-0024X
Device SSID: ShellyPlusI4-XXXXXX

Short description

Shelly Plus i4 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 i4 to control other connected Shelly switches, sensors, or HTTP and MQTT-controlled devices. Small enough to fit behind every wall switch, Shelly Plus i4 can show the status and control the action of four inputs.

You can access and monitor Shelly Plus i4 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 i4 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 N and 2 L

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 second OFF
- Button pressed and held for 5 seconds:
  ½ second ON / ½ second OFF
- Button presses and held for 10 seconds:
  ¼ second ON / ¼ second 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):	37x42x16 ±0.5 mm / 1.46x1.65x0.63 ±0.02 in
Weight:	18 g / 0.63 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:	Orange
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:	110 - 240 VAC, 50/60 Hz
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		Wires
SW1, SW2, SW3, SW4	Switch/button input terminals	L	Live (110-240 V) wire
L	Live (110-240 V) terminals	N	Neutral wire
N	Neutral terminal

Troubleshooting

...

Web Interface guide

Read the Shelly Plus i4 web interface guide

Components and APIs

Printed user guide

Shelly Plus i4 multilingual printed user and safety guide.pdf

Compliance

Shelly Plus i4 multilingual EU declaration of conformity.pdf

Shelly Plus i4 UK PSTI ACT Statement of compliance.pdf