SONOFF BASICR4 Review 2026: Why This Aging Legend Still Rocks

Last updated: March 13, 2026

Some tech just refuses to die. And for good reason. The SONOFF BASICR4, launched a few years back, is one of those smart switches that has aged with surprising grace. In this deep-dive SONOFF BASICR4 review for 2026, we’re going to break down why this little device is still such a relevant choice, especially given its evolution towards Matter compatibility and its rock-solid integration with Home Assistant—which is what we really care about around here.

What is the SONOFF BASICR4, and Why Is It Still a Big Deal?

Far from being just another Wi-Fi switch, the SONOFF BASICR4 was built on an ESP32 chip—a decision that, in hindsight, was a stroke of genius. This choice has not only made it incredibly versatile for those of us who love tinkering with firmware like ESPHome or Tasmota, but it also allowed it to adapt to the new standards of the smart home.

Its standout features, like the “Magic Switch” mode that prevents the switch from becoming unresponsive if someone physically flips it, and the eWeLink-Remote system (an RF control, not to be confused with Wi-Fi), give it functionality beyond a simple on/off. But its true value in 2026 lies in how it integrates into serious, local-first ecosystems.

SONOFF BASICR4 Tech Specs: A 2026 Deep Dive

While the base specs haven’t changed, how we interpret them in today’s landscape certainly has. Let’s see what this device offers now:

Home Assistant Integration: Unlocking the BASICR4’s True Power

Forget the eWeLink app if you want to squeeze every last drop of potential out of this device. Its true home is in Home Assistant, and we have several ways to integrate it, each with its own pros and cons:

• Via Matter (The Recommended 2026 Method): This is the easiest, most standardized path. Once added to your Wi-Fi network, Home Assistant will discover it as a Matter device, and you can add it with a few clicks. It’s local, fast, and reliable.
• Via Sonoff LAN (HACS): For years, this was my go-to method. This custom integration allows local control of Sonoff devices without flashing. It remains a robust option if you don’t want to use Matter.
• Via Flashing with ESPHome/Tasmota: For absolute control. Flashing the device with custom firmware like ESPHome gives you total power over its behavior. This is the path for advanced users who want to customize every single detail. If you’re interested, I recommend reading about what ESPHome is and what it can do.

In my testing, the Matter integration strikes the perfect balance: it offers the simplicity of initial setup with the robustness of local control, which is the core philosophy of Home Assistant.

The BASICR4 in the 2026 Matter & Thread Ecosystem

It’s important to clarify a key point: the SONOFF BASICR4 has Matter compatibility over Wi-Fi. This means it does not use the Thread protocol. In 2026, this has practical implications:

• Pros of Matter over Wi-Fi: You don’t need an additional Thread border router if you already have a solid Wi-Fi network. Most homes already have the necessary infrastructure.
• Cons: Wi-Fi devices tend to consume more power than Thread devices and can contribute to Wi-Fi network congestion if you have dozens of them.

For a device like a switch, which is always powered, consumption isn’t a critical issue. The key is to have a well-managed Wi-Fi network. To learn more about these standards, check out my guide on the differences between Matter, Thread, and Zigbee.

IoT Security in 2026: How to Lock Down Your SONOFF BASICR4

Having connected devices on our network is amazing, but it’s also a responsibility. In 2026, securing your home network is non-negotiable. For a device like the BASICR4, I strongly recommend two practices:

1. Use WPA3: If your router supports it, make sure your Wi-Fi network uses the WPA3 security standard. It offers much more robust protection against attacks than the older WPA2.
2. Network Segmentation (VLANs): This is the most effective measure. It involves creating an isolated network (a VLAN) just for your IoT devices. This way, if one device were ever compromised, it couldn’t access your computers, NAS, or personal data. It’s an advanced setup but fundamental for a secure smart home. Here’s how to bulletproof your smart home network.

Showdown: SONOFF BASICR4 vs. Rivals in 2026 (Shelly & Aqara)

How does the BASICR4 stack up against its direct competitors? Here’s a quick comparison table with two of the most popular: the Shelly Plus 1 and the Aqara T1 (with neutral wire version).

The choice depends on your ecosystem. If your network is primarily Wi-Fi and you’re looking for a cheap, direct-to-Matter solution, the BASICR4 is unbeatable. If you already have a solid Zigbee network with a great coordinator like the SMLIGHT SLZB-06, an Aqara device might make more sense to strengthen that mesh.

Is a SONOFF BASICR5 Coming? A Look to the Future

As of March 2026, the SONOFF BASICR4 remains the go-to model in the company’s basic lineup. However, rumors are already circulating in the community about a potential SONOFF BASICR5. Speculation suggests it might make the leap to native Thread support for better integration into low-power mesh networks and perhaps an even more compact design. For now, it’s just talk, but it shows the market never stands still.

Price, Discounts, and Where to Buy

One of the biggest reasons for the BASICR4’s continued success is its price. You can usually find it for under $10, an incredible value for a device with its potential and Matter compatibility.

Even better, for our readers, you can get an exclusive deal when buying directly from the official ITEAD store:

• 10% OFF with code TECNOYFOTO!: Use this coupon at checkout to get an additional discount on the device’s already excellent price.

Buy your SONOFF BASICR4 with a discount here

Take this opportunity to automate a lamp, a fan, or any other appliance without breaking the bank.

The Verdict: Is the SONOFF BASICR4 Still Worth It in 2026?

The short answer is a resounding yes, but with a few caveats. The SONOFF BASICR4 has proven to be an incredibly resilient device thanks to its ESP32 chip and its adoption of the Matter standard. It is, without a doubt, the best option for anyone looking for a cheap, reliable Wi-Fi smart switch with 100% local control through Home Assistant.

If you’re just starting your smart home journey or your ecosystem is built on Wi-Fi, it’s a brilliant purchase. If, however, your home runs on a robust Zigbee mesh, you might prefer alternatives from Aqara to avoid relying on your Wi-Fi router. In any case, the BASICR4 has earned its place in the smart home hall of fame on its own merit.