The short version
A Zigbee temperature/humidity sensor with a magnetic mount and CR2477 battery.
From the HackerLinks archive
SONOFF SNZB-02P
A Zigbee temperature/humidity sensor with a magnetic mount and CR2477 battery.
At a glance:
First seen:2026-10-07
Last seen:2026-10-07
Times seen:1
Website:sonoff.tech
Why it caught our attention
A user's replacement choice and approval of the magnetic mount provide concrete endorsement.
Where it surfaced on Hacker News
2026-10-07
“I've replaced most of them with Sonoff SNZB-02P which runs a CR2477 battery and I expect the battery life to be at least 3 years; with some luck maybe 4? Not as slim however, but the built-in magnet makes up for it.”
moogly · recommendation · first hand use
Direct HN comment
Best-selling Zigbee temperature sensors tested and compared
Also surfaced in this discussion
Battery Notes
Best-selling Zigbee temperature sensors tested and compared
2026-10-07