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SMLIGHT

SMLIGHT SLZB-MR3

Bridges and Hubs · And More

Partly worksLocal

1 report: 1 says it partly works.

Reported on r/homeassistant with OTBR.

What people report

IntegrationIn Home AssistantIn Apple HomeWhat they saidSource
OTBRPartly works LocalOTBR breaks after SLZB-OS updates when Thread radio firmware not reflashed
Saved copy
Your logs show the exact same Spinel TimeoutError I've been getting on my SLZB-MR4U. Might be related to what I found today. I spent today chasing this down with full syslog capture across multiple SLZB-OS updates. What I found is that when SLZB-OS updates it doesn't always reflash the Thread radio firmware as part of the update process, which leaves the radio completely unresponsive to Spinel. OTBR then just times out and dies. Not sure if that's exactly what's happening for you since your trigger seems to be OTBR addon updates rather than SLZB-OS updates, but the end symptom is identical. …

Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23.

Reddit comment · 2026-04

Each row is one report from a GitHub thread, an integration’s docs, or r/homeassistant. Check the date and the linked source before you buy.

In ReReHome

Once Home Assistant’s HomeKit Bridge shares it, this device reaches Apple Home as a HomeKit accessory behind your Home Assistant bridge, so ReReHome shows and controls it like any other.

Identifiers

BrandSMLIGHT
ModelSLZB-MR3
CategoryBridges and Hubs