SONOFF BASICR4 – Wi-Fi Smart Relay Module for Home Automation
SONOFF BASICR4 – Wi-Fi Smart Relay Module for Home Automation
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【Equipped with ESP32 – Smarter Core, Better Performance】Equipped with the new-generation ESP32 chip, BASICR4 delivers a faster response, more stable connectivity, and improved processing power—all while remaining budget-friendly for your smart home setup.
【Magic Switch Mode – Smart Even When Wall Switch is Off】With its unique Magic Switch Mode, you can still control your lights from the app, even if a traditional wall switch has been turned off. Enjoy continuous remote access and automation.
【eWeLink-Remote Built-in Gateway – Unlock Two-Way Local Control】As an eWeLink-Remote gateway device, BASICR4 allows you to pair with S-Mate2, R5 and other remote sub-devices. Configure two-way or multi-way control, and enjoy low-latency local control without depending on Wi-Fi.
【Group Control – Smarter Management for Multiple Devices】Easily group your devices by room or scene, and control multiple switches simultaneously via the app. Save time and simplify your daily routines.
【Certified Safety with Real-time Thermal Protection】Features a built-in temperature sensor that continuously monitors internal heat levels. Automatically cuts off power in case of overheating, safeguarding your home against hazards like deformation, melting, fire, or live-wire exposure. Certified with CE, FCC, ETL, and more.
Highlights
- Chip Upgrade : Features the EFR32 series chip, significantly enhancing communication capabilities for improved performance.
- Remote Device Control: Monitor and control your connected devices from anywhere with an internet connection. Stay informed and in control, even when on the go.
- Home Automation : Integrate BASICR4 into your smart home ecosystem to create custom scenes and schedules tailored to your daily routines.
- Magic Switch Mode: Control your bi-stable rocker switches intelligently. Even if it's off, you retain full app control!
- Auxiliary Over-temperature Protection : Equipped with a built-in temperature sensor, the device monitors internal heat in real-time to help prevent deformation, melting, fire, or live-wire exposure due to excessive temperatures.
Applications
- Smart Lighting Control
Transform your traditional wall switches or ceiling lights into smart switches with Wi-Fi connectivity. Control lighting remotely via an app, voice assistant, or automation scenarios.
- Remote Control for Home Appliances
Switch home appliances, such as fans, coffee makers, or water dispensers, on or off from anywhere using your smartphone via the app.
- DIY Smart Home Projects
Ideal for makers and DIY enthusiasts looking to add smart control to existing non-smart appliances without replacing them entirely.
Specification
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Model |
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MCU |
ESP32-C3FN4 |
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Input |
100-240V ~ 50/60Hz Max 10A |
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Output |
100-240V ~ 50/60Hz Max 10A |
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Max. Power |
2400W @ 240V |
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Wireless Connectivity |
Wi-Fi IEEE 802.11b/g/n 2.4GHz |
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Net Weight |
45.8g |
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Product Dimensions |
88x39x24mm |
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Color |
White |
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Casing Material |
PC V0 |
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Applicable Place |
Indoor |
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Operating Temperature |
-10℃~40℃ |
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Working Humidity |
10%~95%RH, non-condensing |
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Certification |
ISED / FCC / RoHS / ETL / CE / SRRC |
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Executive Standard |
EN IEC 60669-2-1, UL 60730-1, CSA E 60730-1 |
Key eWeLink Features
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Device Homepage Functions |
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Key Features |
Feature Description |
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On/Off |
Device on/off status |
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Schedule |
Set the device to complete the specified action at the specified time. |
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Timer |
Set delayed actions for the device to perform after a specified time. |
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Loop Timer |
The device performs a pre-defined action cyclically at specified time intervals. |
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Device Settings |
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Key Features |
Feature Description |
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Third-party Platforms
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Alexa |
You can control your smart devices through third-party services, including voice control.
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Google Home |
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IFTTT |
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SmartThings |
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Alice |
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Assign Location |
Set up the home and room where the device is located. |
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Share |
The device can be shared with other eweLink accounts. |
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Create Group |
Once multiple devices are created in a group, you can sync all devices in the group. |
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Smart Scene
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Trigger condition |
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Execution Action |
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LAN Control
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A control method where the app communicates directly with the device through the same router, bypassing the cloud platform.
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eWeLink Remote Sub-devices
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If you also bought SONOFF R5, you can add it as a sub-device to MINI-RBS. Through 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. |
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Push Notifications
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After enabling “Push Notifications,” also ensure that notifications are allowed in Phone Settings > Permissions for the eWeLink App. This will enable you to receive push notifications when the device state changes.
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Offline Alert
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Enable “Offline Notifications” and grant eWeLink notification permissions in Phone Settings > Permissions. You will receive a mobile push notification 5 minutes after the device goes offline.
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Logs |
Record device state changes. (You can view operation records from the past three months.) |
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Network Indicator |
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Magic Switch Mode |
Add a wire to connect L1 to L2 on the wall switch according to the manual, and the device will remain online even when you turn it off via the wall switch after enabling "Magic Switch Mode".
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Power-on State |
The switch state of the device when power is restored after a power outage.
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The power-on state will be delayed for the duration you set.
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Inching Settings
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The device will automatically turn off/on after being powered on for a specified duration.
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Wi-Fi Settings |
Configure the WiFi network connected to the device. |
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Delete Device |
Remove the device from the eWeLink platform. |
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