It’s still neater and/or easier than connecting a WiFi switch close to the light on the ceiling. The SONOFF MINIR4 switch fits in the “box” but it’s still quite tight. I did not use the N port on the left because the light is already connected to the Neutral wire from somewhere else in the house. When I call those “boxes” there are really holes in the wall here… Wiring is quite straightforward as I just had to connect the light switch to S1 and S2 using short wires, insert the live wire that was previously going to the light switch to Lin, the wire going out of the switch to Lout, and finally the Neutral wire to one of the N ports on the MINIR4. The first challenge is that contrary to the similarly-sized SONOFF ZBMINI Extreme Zigbee switch, the MINIR4 WiFi switch requires a neutral cable, and most lights in Thailand are wired without a neutral wire, so I had to get the neutral wire from the outlet switch box underneath. Note this review was done with a light switch “box” (about 11圆cm) in Thailand, so your mileage may vary. We’ve already gone through the specifications, unboxing, and teardown in the announcement, so I’ll get straight to the installation part.
In this post, we’ll review the SONOFF Mini Extreme, also known as MINIR4, WiFi smart switch based on ESP32 wireless MCU by installing it into a wall-mounted light switch box and controlling it with both the eWelink mobile app for Android and the SONOFF R5 scene controller.
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