An update on the meross, installed seamlessly with home assistant through matter, as soon as I updated the firmware on the device and reinterviewed - all the power monitors appeared in matter.

The slim version is smaller than the p110m, and you can easily fit two side by side in standard Australian plugs.

As for durability, it's behind an air fryer for me at the moment, ran at 2000W (8.3A) for 20 minutes and it didn't die. It's rated for 10A. 

  @Cammm 10A is unfortunately not enough, which is why I went with the TP Link in the first place (16A)

  @AndyL069 the P110m is also 10A according to this: P110m Specifications

I wouldn't have thought you could pull 16A through a standard AU GPO.

Or not using the AU version?

  @AndyL069 I'm no electrician, but I'm pretty sure 15A needs a different type of plug (has a thicker earth connector).

you shouldn't be able to plug 15A devices in to a 10A socket.

  @Cammm 

not an electrician, but standard GPO are rated at 10A.

15A have a larger earth pin.

  @Grubsy The EU version is rated 3680W / 16A with Schuko / CEE 7/4 plug

Good news - I've been emailing support about the new firmware and managed to get them to push the beta firmware to one of my devices. Energy/power monitoring seems to work fine and is visible in both home assistant and SmartThings. Once the firmware was updated I just reinterviewed the device in HA and energy/power started to be reported.

  @MarkCarline 

MarkCarline wrote

managed to get them to push the beta firmware to one of my devices. Energy/power monitoring seems to work fine and is visible in both home assistant and SmartThings

That's excellent! Thanks for sharing, can you comment on the reporting rate? Also, is it smart to report significant changes like Matter specification describes? For instance, if you have a TV plugged-in and you turn the TV on (or off) will it report it quickly or will just follow its periodic report schedule?

  @mocelet re: reporting rate....

I just plugged my air fryer into it and switched it on for 10 seconds and noticed that the increase in power consumption was reported almost immediately, after switching the air fryer off, the reduction in power consumption seem to also get reported immediately. 

I'm not sure if there is a threshold by which a change in power consumption means that the new power consumption then gets reported. I've had Z-Wave devices before which would only report power changes if there was a 5% change. 

Very impressed with it so far. 

+ I will keep asking support for when this will be readily available but obviously because it is beta I would be apprehensive about having it on any more devices.

Thanks for the insight @MarkCarline ! I'm not really in a hurry to get the feature so won't ask for the beta but I have to admit I was I bit reluctant to purchase more P110M until the firmware was ready. Was also making time for the P115M announced back in 2023, the European P110M is too bulky by today's standards.