SONOFF BASICR4 Wi-Fi Smart Switch
Description
- SONOFF BASICR4 Wi-Fi Smart Switch with ESP32 & Overheating Protection
- Upgraded Smart Control
- Innovative Magic Switch Mode
- Auxiliary Overheating Safety
- ETL Certified Reliability
- Versatile App & Voice Commands
The SONOFF BASICR4 Wi-Fi Smart Switch represents an advanced upgrade in the realm of smart home technology. This device enhances the functionality and performance of its predecessors, offering users a seamless and efficient way to manage their home appliances. The BASICR4 introduces three innovative features: Magic Switch Mode, Auxiliary Overheating Protection, and "eWeLink-Remote" Control. The Magic Switch Mode allows for continued app control of the light switch even when a traditional wall switch is turned off, provided it is compatible with certain double pole rocker switches and the connected lighting fixtures are compatible with specified LED, energy-saving lamps, or incandescent lamps.
The BASICR4 also serves as a smart switch with gateway capabilities through the "eWeLink-Remote," which, when paired with compatible devices such as S-Mate2 or R5, enables two-way and local control. Additionally, the product is equipped with a built-in temperature sensor that monitors the maximum temperature of the device, safeguarding against potential hazards such as deformation, melting, or fire due to overheating. The BASICR4 is not only compliant with standard certifications such as CE and FCC but has also achieved the more prestigious ETL certification.

Furthermore, the BASICR4 offers a comprehensive suite of smart features including app-based remote control, voice command capabilities, customizable timers, and power-on state memory. These features allow for the creation of various smart scenes that can simplify and enhance daily life, providing users with the ability to control their home appliances from anywhere.
Please note that the Magic Switch Mode is only compatible with certain mainstream brands and specific types of lighting fixtures.
- 1x SONOFF BASICR4 Wi-Fi Smart Switch

- 24 x 39 x 88 mm / 0.94 x 1.53 x 3.46 inch (L x W x H)
- Input: 100 - 240 VAC 50/60 Hz
- Output: 100 - 240 VAC 50/60 Hz
- Max. Power: 2400W at 240V
- Working temperature: -10 ~ 40 °C
- Wi-Fi: IEEE 802.11 b/g/n 2.4G Hz
- Material: PCVO
- ESP32 Chip
- Magic Switch Mode
- "eWeLink-Remote" Control
- Group Control
- Safe and Reliable with a built-in temperature sensor
- CE, FCC, ETL certifications
- APP remote control, voice control, timer, power-on state
- Compatible with mainstream brands of double pole rocker switches
- Compatible with mainstream brands of LED, energy-saving lamps, and incandescent lamps ranging from 3W to 100W
- Weight: 45.8 g
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Refund Policy
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorization (RA) before initiating a return request.
European consumers exercising their statutory Right of Withdrawal are subject to different conditions. See the Statutory Right of Withdrawal.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
- A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
- The RA number is valid for 30 days. The returned item must be received within that period.
- The RA number must be included with the return.
- Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
- Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
- Refunds are processed within 7 days after receipt and inspection of the returned item.
- A €100 cleaning fee may apply to domestic robots returned in used or unclean condition.
- A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RobotShop's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
- Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
- Consumables * — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
- Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
- Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
- Build-it-yourself products and items requiring customer assembly * — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
- Digital Goods, Software, and Apps * — Final sale only, due to licensing restrictions.
- Clearance Items * — Products identified as clearance or final sale, including end-of-life or discontinued items.
- Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
- On-Demand Items * — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfill a customer request.
- Professional & Specialized Equipment — See the Professional & Specialized Equipment Warranty page and Professional & Institutional Buyers (B2B) section in the Terms & Conditions.
* European consumers retain their statutory Right of Withdrawal on these items. Its exercise is subject to the conditions and exclusions set out in the Statutory Right of Withdrawal, and any reimbursement may be reduced to reflect a loss in value resulting from handling beyond inspection.
How to Request a Return Authorization (RA)
While the same return policy applies, these orders require a separate contact process for returns.
- RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets, or contact us through our Support Center.
- Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".