Can't setup SMLight MR1U, Z2M and HomeAssistant

Configuration Zigbee
1

Hello.

I have been using Home Assistant for some years now. First on a Pi3 with ZHA and for the last 1-1.5 years Z2MQTT on a HP Elitedesk Mini through Proxmox. At the same time as the move to Proxmox I got an SMLight SLZB-06m (through wifi) and while setting it up took some time I got it running with a youtube guide holding my hand.

I am currently trying to get a new system up and running at another location. I again have an Elitedesk G4 (not Mini this time) running Proxmox with HomeAssistant OS as a VM and a SMLight MR1u (PoE). This time though the setup/configuration has changed at the software side and I am totally lost. I can’t find the settings old guides point to and I haven’t found any guides using the new configuration.
To make matters worse I am short on time as I’m leaving this location in less than two days and won’t be back until christmas.

Can someone please give me clear instructions (or point to a guide, text or video) on what to do to have z2m connect to the MR1u?

The MR1u is visible in HA withoutmedoinganything.
I have Mosquitto broker installed, no configuration changes done (no user account created)
I have Z2MQTT installed and I have tried various things that haven’t worked, uninstalled and reinstalled several times. Currently I am stuck with this error at plugin start:
“[2026-07-27 00:05:03] info: z2m: Started frontend on port tcp://192.168.1.6:7638:8099
Error: getaddrinfo ENOTFOUND tcp://192.168.1.6:7638
at GetAddrInfoReqWrap.onlookupall [as oncomplete] (node:dns:122:26)”

192.168.1.6 is the MR1u’s IP.
Home assistant is on 192.168.1.182:8123

2

You have 2 ports there, so that’s at least 1 of your issues. Also, I’m pretty sure that the frontend should have HA’s IP, not your MR1U one. Should be 192.168.1.182:8099.

Z2M now has an onboarding screen in the UI which makes it pretty hard to mess up. I suggest you remove the yaml config for Z2M, restart & do the setup from the onboarding screen.

3

On my SLZB firmware, they give you the yaml for z2m config.

Screenshot 2026-07-27 101027
Screenshot 2026-07-27 1010271882×928 142 KB

However, looking at my own config, there is an extra line: data_path: /config/zigbee2mqtt and I’m not really sure what it is for. Maybe config save location?

Anyway, you should be good with this:

data_path: /config/zigbee2mqtt
mqtt: {}
serial:
  port: tcp://192.168.1.6:7638
  adapter: zstack
  baudrate: 115200

Or just paste in the config from the SLZB firmware and see what happens.

4

Check the baudrate. There are Zigbee FW with two different speed.