XUELILI WiFi Water Heater Switch, Immersion Heater Smart Timer Switch, Voice Control Smart Boiler Button Switch Compatible with Alexa and Google Assistant, White, 4000W, 20A, DS-102BWN

Bought this to switch a rainwater pump using a 'routine' in Alexa. Easy to install, easy to connect with the Smart Life app, and also integrate with Alexa. You will need a 35mm deep pattress or wall box to accommodate it though, and it is only a single pole switch.

Works as expected and has no issues with the load of the Immersion heater. Needs quite a deep back box, but as long as this is fitted, everything else is easy to wire in. I had no trouble connecting to the WiFi Access Point on the 2.4Ghz band.

Easy enough to install - though I find the off light a bit bright. My only quibble is that every now and then it seems to ignore Alexa’s instruction to turn off. The other items in the group all turn off but this switch needs to manually operated Only go “off” never for “on”.

Burnt out ... After 2 years of use, the unit caught fire are burnt out (without tripping the mains fuse). As it's in my airing cupboard with a lot of towels, it was lucky to not to set my house on fire.

Looks good though this is going in the garage to control my Storage Heaters via a contactor, 5 Amp rated. It is supposed to control up to 20 Amps (4kWatts) but the terminals look a bit light for that to me. If I were using this for anything near that loading I think I would be checking the terminals regularly to make sure it's not being overloaded. Apart from the terminal quality I am quite pleased with this switch, it connected easily with my iPhone 7 and I'll be installing it this weekend. The 32mm back box I'm using is only just deep enough, 35mm would have been better.Update:- I tried using the 32mm back box but too tight for the wiring so it does need a 35mm box. Otherwise it's all working fine.

We had the older design of one several years but it did not like our new 5g modems. These devices work seemless with alexa and probably google too. The amount of money saved by having a run back timer or a remote timer is not to be sniffed at

The install was simple. I like the lights on the display. The connectivity with Google home worked great for me.

This is a great product and very easy to use. The installation was simple and very discreet product. It is too early to tell if it has done the job, but so far it’s been good.