Not wishing to be contentious and speaking from ignorance, if the display has WiFi, surely the meter is sending it the data the same way. Or am I missing something?
(Don't worry not contentious - fair question)
No the actual meter (installed at the supply cutout) communicates with the display (so called IHD or In Home Display) using the ZigBee protocol. This is known as the HAN - Home Area Network - but it is not an open network. It is deliberately closed.
Although the meter has an LCD display, so that you can read it - this is a different "display" to the IHD - which happens to be entirely optional, and as noted above, could well be shoved in the drawer as it doesn't affect the operation or metering ability of the meter itself. Its just extra stuff they give to customers so they can see what is happening without having to necessarily look in the meter cupboard / and/or get some extra stats and infor.
Any other subsequent connections to the IHD for apps, browser etc could well be using WiFi but they definitely wont be using ZigBee on the HAN.
Edited by Pheasant (Sun 02-Jul-23 19:20:07)