SONOFF Smart WiFi Light Switch 10A 2400W, Wireless Relay Switch Universal DIY Module for Smart Home Automation, Works with Alexa/Google Home/eWelink/IFTTT, No Hub Required, BASICR4

I had been looking for a solution for a long time that would provide smart control over my lights while still keeping a fully functioning traditional wall switch. Like many UK homes I have no neutral wire at the switch and no constant live feed at the light. This is the first product I found that could do this task. Installing and setting these up was very straight forward. The only issue I had is that, with the wall switches in my house, the Sonoff wouldn't always respond if I pressed the wall switch quickly. I suspect the interruption in power was too short (the Sonoff works on the basis that power is going to it regardless of which position the wall switch is in - it knows you've pressed the wall switch and want to turn the light on or off because of the brief interruption that occurs when the wall switch is pressed). I took a chance replacing my wall switches with new ones and now it's all working flawlessly (the new wall switches I went with that work are MK Logic Plus switches). Basically, when it's all working you can at all times control the lights using either the wall switch or the app regardless of whether the light was previously turned on or off with the app or wall switch. The Sonoff has a good reliable wifi signal. The app works even when your're away from home and you can use it to set schedules and well as turn the lights on and off. I've also connected it to Alexa without issue. Overall these are great. Just be aware that they may not work with 100% of wall switches so you may have to replace your existing ones.

Used to control and out side lantern. downloaded app. no problem. lantern worked off app, so connected to Alexa, again no problem. Lantern via Alexa skill now turns on 15 minutes before sunset and off at 10.30! Fantastic value

I recently installed this on some down lighters I added to soffits of my garage for some external lighting, this has worked flawlessly over the last few weeks and was very simple to setup. My only comment would be the terminals for the cable were quite small and fiddly to insert 1.5mm T&E in and the screws to clamp it down felt like they would easily break, but they have held up and I've had no issues

Good value for money easy to set up

You need to have internet if you install it outside. It works on 2.5Ghz not 5. Works for my patio lights. Easy to set up but you need to download their app to begin with. Once it's connected on the app it's easy to set up on Alexa.

Great product many thanks

Works well, the device was easily picked up (2.4 GHz only), and works well through Alexa. The Magic link works to switch on... but won't turn it off, I have to ask Alexa, and the ability to also use the light switch was one of the reasons I chose this unit.

The upgrade from ESP8265/ESP8266 to ESP32-C3 with the R4 gets you 160Mhz processing and 4MB of flash. This allows flashing with Tasmota versions that support "Matter" which is helpful for Google Home pairing. As an Alexa household I've always flashed Tasmota and used the Wemo emulation, but my daughters Google Home didn't support the Wemo or Hue emulations.