SONOFF MINIR4 Buying Guide: Neutral Wire, Loads and Fit

The SONOFF MINIR4 needs a neutral conductor, uses 2.4 GHz Wi-Fi with eWeLink, and has a maximum 10 A resistive-load rating. One sold unit contains one module. Its small case does not guarantee that it will fit your existing mounting box, and this MINIR4 is not the separately documented Matter-enabled MINIR4M.

Before ordering, have a qualified electrician assess the intended location, supply, load and usable enclosure space. This guide explains what to check when choosing the module; it does not provide installation instructions or certify a particular circuit.

Product facts and the questions they leave open

The table separates this seller's listed contents from manufacturer specifications and conditions that depend on your installation. These are documented statements, not results from an independent electrical or performance test.

Confirm the neutral conductor and the exact load

A neutral conductor is required

The model-specific SONOFF MINIR4 documentation establishes the neutral requirement. An inconsistent supplier attribute describing a no-neutral device should not override that requirement. If availability at the proposed location is unknown, resolve it with a qualified electrician before choosing the module.

Keep the load type beside the 10 A figure

The stated rating is 100-240 V AC, 50/60 Hz, with a maximum 10 A resistive load. The final words matter: the number alone is not approval for every motor, fan, LED driver or appliance. Nor should a wattage quoted at one supply voltage become a blanket limit across the whole voltage range.

Ask for an assessment of the specific load, rather than matching only an appliance name or the largest number on a listing. A separate load-specific suitability finding has not been established for your equipment.

Check the Wi-Fi band and app expectations

MINIR4 documents 2.4 GHz IEEE 802.11 b/g/n Wi-Fi and the eWeLink app. A 5 GHz-only network does not meet that requirement. A router offering both bands is not automatically unsuitable, but the available network and app requirements still need checking.

Neither the module's compact size nor its Wi-Fi label establishes control distance, response speed or reconnection reliability in your home. Also distinguish the documented app from any additional ecosystem you want to use: universal third-party compatibility and guaranteed cloud-free operation are not established by this listing.

Check usable space, not just the case dimensions

The module case measures 39.5 x 33 x 16.8 mm. That is the object to accommodate, not a verified minimum cavity size. The existing switch mechanism, wires and suitable enclosure and cover also affect the space available.

Have the installer assess the actual box rather than treating an EU, US or 86-type label as a fit guarantee. The listed 12 x 6 x 4 cm measurement belongs to the shipping package, not the module or the required mounting space. No universal box-depth or clearance value is supplied here.

MINIR4 and MINIR4M are different models

The final letter changes which product documentation applies. This listing is MINIR4. SONOFF separately documents MINIR4M with Matter support; that does not add Matter to the item sold here.

Choose by the exact model designation, not a similar enclosure or the shared MINI name. This comparison does not promise a firmware conversion, interchangeable accessories or compatibility with every Matter platform.

What is included in one sold unit?

One unit contains one MINIR4 relay module. The current listing does not include the wall switches, lamps, mounting boxes, R5/S-MATE transmitters or sensors shown in demonstrations. Buying the module is different from buying a complete switch-and-accessory set.

An official MINIR4 manual is available online, but that does not confirm a paper copy in this seller's box. Loose wires, screws and a printed booklet have not been enumerated as included. Confirm any extra item you need rather than counting it from a photograph.

A short checklist before ordering

• Confirm that the item is MINIR4, not MINIR4M or another MINI model.
• Have the neutral conductor, supply, specific load and enclosure suitability assessed by a qualified electrician.
• Check 2.4 GHz Wi-Fi availability and your eWeLink expectations.
• Decide how many modules you need; each sold unit contains one.
• Separate the module from any wall switch, box or external accessory you need.

With those questions resolved, check the SONOFF MINIR4 module and current included contents before choosing your quantity. A product page or this checklist cannot certify your circuit.