MINIR4

Product Overview

Introduction

Product Name	SONOFF MINI Extreme Wi-Fi Smart Switch
Product Model	MINIR4

MINI Extreme is compact and tiny enough to be installed in the mounted box, and it supports loads of up to 10A, enabling you to transform your ordinary switch into a smart switch. Safe and smart, it allows you to set smart scenes with other smart devices to automate your home.

Highlights

Super Tiny Size: Its compact size allows it to be installed in various mounting boxes, including the smallest European standard.
Ultra-fast ESP32 Chip: With its speedy dual-core performance and ample memory, it provides long-lasting and stable operation.
Wi-Fi Connectivity: No hub is required. Connect directly to your home Wi-Fi network for full control of your lights and appliances from anywhere via the app.
External Switch Control: Easily connect to the momentary switch, door exit switch, SPDT switch, latching switch, and even dry contact sensors.
Detach Relay Mode: MINIR4 has 'detach relay' mode, which means the states of external switches and the relay are separated, so operating the external switch button won't affect the relay state.

Applications

Smart Lighting Control

Upgrade traditional wall switches for lights or ceiling lamps into smart switches. Control lighting remotely via app, voice assistant, or automation scenes.

Home Appliance Automation

Easily convert on/off control of small home appliances (e.g., fans, coffee makers) into smart, scheduled, or remotely managed devices. Supports up to 10A load.

Home Automation Through Smart Scenes

Create intelligent linkages with sensors, plugs, or other smart devices—for example, turn on hallway lights automatically when motion is detected at night.

etc...

Specification

Model	MINIR4
MCU	ESP32-D0WD-V3
Rating	100-240V~ 50/60Hz 10A Max Resistive Load μ
Max. Load	2400W@240V
Wireless Connectivity	Wi-Fi IEEE802.11b/g/n2.4GHz
Net Weight	26.7g
Dimension	39.5x33x16.8mm
Color	White
Casing Material	PC V0
Applicable Place	Indoor
Operating temperature	10T40(-10℃~40℃)
Working Humidity	5%~95% RH, non-condensing
Working height	Less than 2000m
Certification	CE/FCC/RoHS/SRRC/TUV/ISED
Executive standard	EN IEC 60669-2-1
Pollution degree	II
Rated impulse voltage	4kV
Automatic action	10000 Cycles
Control type	Type 1.B
Wiring diameter	16AWG to 14AWG

eWeLink Key Features

Device Home Page Functions
Key Features	Feature Description
On / Off	Device on/off state
Schedule	Set the device to complete the specified action at the specified time.
Timer	Set delayed actions for the device to execute after a specified time
Loop Timer	The device executes a predefined action cyclically at specified time intervals.

Device Settings
Key Features		Feature Description
Third-party Platforms	Alexa	You can control your smart devices through third-party services, including voice control.
	Google Home
	IFTTT
	SmartThings
	Alice
Assign location		Set up the home and room where the device is located.
Share		The device can be shared with other eweLink accounts.
Create Group		After multiple devices are created into a group, you can synchronize all devices in the group.
Smart Scene	Trigger Condition	On/Off External switch [Click] When Detach Relay is enabled, this additional trigger condition is added to the scene.
	Execution Action	On/Off/Reverse
LAN Control		A control method where the app communicates directly with the device over the same router, without going through the cloud platform. On/Off
eWeLink-Remote Sub-devices		If you have also purchased the SONOFF R5, you can add it as a "sub-device" to the MINI-RBS. By using the "Scene Function" in the eWeLink app, the two devices can be linked, allowing the Sonoff R5 to function as a convenient wireless remote controller.
Switch Mode	Mode	External Tigger Mode Setting: Pulse Mode/Edge Mode/Following Mode
	Detach Relay	The states of external switches and relays are separated or not. Enable/Disable
Push notifications		After turning on "Push notifications", also make sure to grant notification permissions in Phone Settings > Permissions for the eWeLink app. This allows you to receive push notifications when the device status changes. On/Off
Offline Alert		Turn on the "Offline Notifications" feature, and grant eWeLink notification permissions in Phone Settings > Permissions. You will receive a mobile push notification 5 minutes after the device goes offline. On/Off
Logs		Records of device status changes. (You can view the operation records of the past three months)
Network Indicator		On/Off
Power-on State		The switch state of the device when power is restored after a power outage. On/Off/Last State/Reverse Last State
		Power-on State will be delayed for the time you set. Enable/Disable Duration range: 0.5s~59min 59.5s
Inching Settings		The device automatically turns off/turns on after being on for a specified duration. Enable/Disable Duration range: 0.5s~23h 59min 59.5s Status: Auto-on/Auto-off
Wi-Fi Settings		Configure the WiFi network connected to the device.
Delete Device		Remove the device from the eWeLink platform.

Installation and Configuration Guide

①Button

Button

Description

Single press

Turn on/off the device

Exit pairing mode when the device is in pairing mode

Press & hold 5 seconds

Device enters the pairing mode (Pairing time 10 minutes)

② LED indicator (Blue)

LED Indicator (Blue)	Description
Keeps on	Online
Flashes two short + one long	In Pairing Mode
Flashes twice	Connected to the router, but not connected to the cloud
Flashes three times	OTA
Quick flash	The router is not connected.

③ Input/Output Terminal

Terminals	Description
N	Neutral (Output Terminal)
N	Neutral (Input Terminal)
L Out	Live (Output Terminal)
L In	Live (Input Terminal)
S1	External Switch (Input Terminal)
S2	External Switch (Input Terminal)

Wiring Diagrams

WARNING:

Please install and maintain the device by a professional electrician. To avoid an electric shock hazard, do not operate any connection or contact the terminal connector while the device is powered on!
The product is designed to be completely installed into a flush-mounted box and enclosed with a cover plate or switch that fulfills the corresponding national standard requirement. There shall be no exposure of any part of the product after installation.
Diameter of wiring(recommend):16AWG to 14AWG SOL/STR copper conductor only.
No matter S1 and S2 are connected or left idle to the external switch, this device can be controlled by automation or the App.
It is prohibited to connect S1 and S2 terminals to the neutral or ground wire, in order to avoid damaging the equipment and causing danger.
To ensure the safety of your electrical installation, it's essential that either a Miniature Circuit Breaker (MCB) or a Residual Current operated Circuit-breaker with Integral Overcurrent protection(RCBO) with an electrical rating of 10A has been installed before the MINIR4.
Make sure all wires are connected correctly.

Terminals		Wires
N	Neutral (Output Terminal)	N	Neutral Wire
N	Neutral (Input Terminal)	N	Neutral Wire
L Out	Live (Output Terminal)	L	Live (100~240V) Wire
L In	Live (Input Terminal)	L	Live (100~240V) Wire
S1	External Switch (Input Terminal)
S2	External Switch (Input Terminal)

Add Device

Open eWeLink to scan the QR code on the Quick Guide or the device itself to add the device.

Enter "Scan".

Scan the QR code on the device.

Select "Add Device".

Power on the device.

Long press the button for 5 seconds.

Check Wi-Fi LED indicator flashing status

(Two short and one long flashes)

Wait for the device to be found and connected.

Select the "Wi-Fi" network and enter the password.

Device added completely.

Install the MINI Extreme in the mounting box

FAQ

1. What is the maximum load supported by MINIR4? What devices can it control?

MINIR4 supports up to 10A of resistive load (e.g., lights, heaters, etc.). Avoid connecting inductive loads (e.g., motors) that exceed the rated power.

2. Where can I install the MINIR4? Is it waterproof?

MINIR4 is compact and designed to fit inside most wall mounting boxes (EU/US standard 86 type). However, it is not waterproof and should not be used in humid or outdoor environments without proper protection.

3. Can I keep using my existing wall switch with MINIR4?

Yes. MINIR4 supports two-way control and can be connected to traditional wall switches for local manual operation.

4. Which voice assistants are supported?

MINIR4 works with Amazon Alexa and Google Assistant, allowing you to turn connected devices on/off using voice commands.

5. Does it support timers and automation scenes?

Yes. You can use the eWeLink app to set timers, countdowns, loop schedules, and create smart scenes with other devices.

Troubleshooting

1. Cannot pair with Wi-Fi

Make sure the device is in pairing mode.

Make sure your mobile device and MINIR4 are on the same 2.4GHz Wi-Fi.

2. MINIR4 is paired but cannot be controlled remotely

Check if the device is powered on and the LED is steadily lit (indicating a successful connection).

Ensure your phone has internet access.

Try rebooting the router and the device or re-pairing it via the app.

3. MINIR4 shows offline in the app

Ensure the device has not lost power.

Check Wi-Fi coverage and avoid placing the device too far from the router.

Try rebooting or resetting the device if the issue persists.

4. The wall switch does not respond

Check if the wiring to S1/S2 terminals is correct and securely connected.

Make sure the wiring length of the external switch connection does not exceed 20m.

If using a two-way switch setup, configure the wiring and logic accordingly.

5. MINIR4 reboots or disconnects unexpectedly

Make sure the connected load does not exceed 10A.

Check for loose wiring, short circuits, or unstable voltage.

Use a circuit breaker or fuse for added safety.

If frequent disconnections occur, consider relocating the device or using a Wi-Fi extender.

Application Explore

1:1 scale 3D model of the SONOFF MINIR4
This is a 1:1 scale 3D model of the SONOFF MINIR4, precisely recreated for physical testing and design validation.

Access Link: 1:1 scale 3D model of the SONOFF MINIR4

Know more

For a detailed guide and review of the SONOFF ZBMINIR4, visit our free course at the SONOFF Academy.

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MINIR4M

Last modified: 2025-07-11

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