The SONOFF MINIR4 is a small WiFi switch module designed to be installed behind an existing light switch or inside a junction box, turning a standard fixture into a smart one. It’s part of the growing category of DIY smart relays that let you keep your existing switches while adding app and voice control. This review covers the 4-pack, which is aimed at people who want to automate multiple circuits at once.
In practice, the MINIR4 is used to control lights, ceiling fans, or small appliances. Because it’s rated for 10A, it’s suitable for most lighting circuits and light-duty loads, but not for high-power devices like water heaters or large motors. The module requires a neutral wire, so homes with older wiring may need to check compatibility before buying. Installation involves wiring the module in line with the load and the existing switch, which means working with mains voltage. That’s a job for someone comfortable with electrical work or a licensed electrician.
Functionally, the MINIR4 does what it promises: it connects to 2.4GHz WiFi (no hub needed), works with the eWeLink app, and supports Alexa and Google Home for voice control. It also has a physical button on the module for manual operation, and it can be paired with a momentary switch for extra flexibility. The module is compact enough to fit behind many switch plates, but space can be tight in shallow boxes. The 4-pack makes sense for multi-gang installations or for automating several rooms at once.
One limitation is that the MINIR4 is a WiFi-only device, so it relies on your home network. If WiFi is down, local control via the physical switch still works, but app and voice control won’t. Also, like many WiFi smart devices, it’s best suited for a network with a strong 2.4GHz signal; 5GHz is not supported. The eWeLink app is functional but not as polished as some premium ecosystems, and advanced integrations like Home Assistant require flashing custom firmware, which voids the warranty and isn’t for beginners.
Compared to smart bulbs, the MINIR4 offers a different approach: it makes the whole fixture smart, so you can use any bulb you like, including dumb LEDs. It’s also cheaper per fixture than many smart bulbs, especially in the 4-pack. However, smart bulbs are easier to install and don’t require wiring. Compared to other smart relays like the Shelly 1, the MINIR4 is similarly priced and offers comparable features, though the Shelly has a larger community and more local-control options out of the box. The MINIR4’s advantage is its small size and the fact that it’s often sold in multi-packs, which can be cost-effective for larger projects.
Who is this for? It’s for DIYers with some electrical experience who want to add smart control to existing lights without replacing switches or bulbs. It’s also for landlords or homeowners who want to automate multiple circuits without breaking the bank. Who is it not for? It’s not for renters who can’t modify wiring, nor for people who are uncomfortable working with mains electricity. It’s also not ideal for those who want a fully local smart home system without cloud dependency, unless they’re willing to tinker with custom firmware.
In terms of performance, the MINIR4 responds quickly to app commands and voice triggers, typically within a second or two on a good network. The physical switch continues to work as expected, and the module remembers its state after power loss, which is handy. The build quality is decent for the price, though the terminals are small and require careful tightening to avoid loose connections. The included instructions are basic but sufficient for someone with wiring knowledge; if you’re unsure, consult a professional.
Overall, the SONOFF MINIR4 is a practical, no-frills solution for basic smart lighting control. It’s not the most advanced or the most polished option, but it fills a niche for affordable, multi-pack DIY automation. Just be prepared for the installation and the limitations of a cloud-dependent WiFi device.