I've recently upgraded my WiFi to a Mesh based Deco M9 Plus. Since then my Smart meters have stopped sending readings. Could these two things be related ?
Best answer by Blastoise186
Updated on 01/12/20: See the info below for advice on frequencies for WiFi, Zigbee and smart connectivity.
If your S2 (Aclara and others) smart meters have connection issues, see this health check guide to diagnose.
If your Secure Liberty smart meter has connection issues, see this health check guide to diagnose.
Yes, this is possible in some cases. The good news however is that there are ways to help fix this. I’m actually also an expert with this stuff as I’m currently upgrading my own network to Ubiquiti UniFi kit.
One of the first things you can try would be restricting the 2.4 GHz usage on your Deco kit to 20MHz channel width rather than 40MHz. This allows a lot more free space on the 2.4GHz band for everything else, including ZigBee based smart meters and IHDs. The Home Area Network (HAN) can be affected by Wi-Fi, but the WAN shouldn’t be affected at all as it’s on a different frequency.
If that doesn’t work, I can help you out with a few other solutions too. Alternatively, if you know you don’t need 2.4GHz Wi-Fi at all, you could also disable that completely and just use 5GHz since this would completely dodge ZigBee altogether.