Sonoff Basic R4

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Single-channel Wi‑Fi smart relay switch
Uses an ESP32 chip for better performance
Input / output: 100–240 V AC, max load ~10 A / 2400 W
Wi‑Fi: 2.4 GHz (802.11 b/g/n)
Magic Switch Mode: You can control the light from the app even if the wall switch is off Sonoff
Supports eWeLink‑Remote gateway: can pair with sub‑devices like S‑Mate2 or R5 to make a two‑way smart switch
Built‑in over‑temperature protection (temp sensor) for safety
Weight: ~45.8 g
Compact size: 88 × 39 × 24 mm

Category: Home Automation Brand: Sonoff

Description

Key Specs & Features

Uses an ESP32 chip for better performance.
Input / Output Voltage: 100–240 V AC, 50/60 Hz.
Max Load: 2400 W (≈10 A at 240 V).
Wi-Fi: 2.4 GHz (802.11 b/g/n).
Working Temperature: –10 °C to 40 °C.
Magic Switch Mode: Lets you control the light via the app even when the traditional wall switch is off.
eWeLink-Remote Gateway Support: Can act as a gateway for S‑Mate2 or R5 devices, enabling two‑way and local control.
Safety: Built‑in temperature sensor for overheating protection.
Certifications: CE, FCC, ETL.
Dimensions: ~88 × 39 × 24 mm.
Weight: ~45.8 g (according to Sonoff Africa)
Group Control: Can control multiple devices / switches in a group via eWeLink

Pros & Considerations

Pros:

Very compact and budget‑friendly.
Magic Switch Mode gives more flexible control (app still works even if wall switch is off).
Good safety with overheating protection.
Gateway functionality via eWeLink‑Remote makes it versatile for smart home scenes.
Works with Alexa / Google Home when using eWeLink.

Considerations / Potential Drawbacks:

Only supports 2.4 GHz Wi-Fi, so you need that band in your network.
Magic Mode may be sensitive to voltage drops (especially in systems with inverters). New World
Not very high load compared to some industrial switches — check your device power.
Because of its small form, wiring in and out might be a tighter fit.

Safety & Maintenance

To keep your system safe and working correctly, please follow these basic safety and maintenance guidelines. These apply to most solar, battery, inverter and electrical components supplied by Rohen Services.

General Safety:
• Ensure all products are installed by a qualified technician
• Do not open, modify or tamper with equipment
• Protect components from water ingress, dust and extreme heat
• Always switch off the power before handling electrical connections
• Use the product only within the manufacturer’s recommended limits

Battery Safety (where applicable):
• Keep batteries in a well-ventilated, dry environment
• Avoid direct sunlight and extreme temperatures
• Do not short-circuit the terminals
• Ensure communication cables are secured and undamaged

Maintenance:
• Check cables, breakers and connectors periodically for wear
• Keep components clean and free of debris
• Test backup systems during low-risk periods (for example during the day)
• Report unusual noises, smells or error messages immediately

Support:
If you are unsure about the safe operation of your product, contact Rohen Services on 082 449 0277 or sales@rohen.co.za. Our team can assist with inspections, diagnostics and maintenance across the North West Province.

Installation & Delivery

Rohen Services provides delivery and installation support across the North West Province for all major solar and power products.

Delivery:
• Standard delivery time is 5–7 working days after payment clearance
• All items are inspected before dispatch
• Packaging is reinforced to protect components during transport
• Basic product documentation is included where applicable

Installation:
Installation is available for qualifying products such as batteries, inverters, panels, hybrid systems, security equipment and monitoring hardware. Work is carried out by trained technicians to ensure safety, warranty compliance and correct configuration.

A standard installation includes:
• Mounting or placement of the product
• Electrical and communication connections
• System testing and calibration
• A final handover with usage guidance

Service areas include Klerksdorp, Potchefstroom, Stilfontein, Hartbeesfontein, Orkney and surrounding regions.

Bookings:
To arrange delivery or installation, contact Rohen Services at 082 449 0277 or email sales@rohen.co.za.

Warranty & Support

Rohen Services supplies all products with the official manufacturer warranty. Warranty periods vary by brand and product type, but most major items such as batteries, inverters and charge controllers include a 5-year warranty, with some models offering optional extensions.

Covered:
• Manufacturing or material defects
• Internal component or BMS faults under normal use
• Performance issues confirmed through warranty testing

Not covered:
• Incorrect installation or wiring
• Lightning, surge or grid damage
• Water ingress, physical damage or tampering
• Use outside the manufacturer’s specifications

Important:
For exact warranty terms on your specific product, please confirm with Rohen Services before installation or use. Some items such as cables, fuses, brackets and smaller accessories may carry limited warranties.

Support:
For warranty queries or troubleshooting, contact Rohen Services on 082 449 0277 or sales@rohen.co.za. Our team manages testing, claims and replacements for customers across the North West Province.