Hey,
It’s not supported yet for Z2M.
The feature is currently available via ZBBridge-P and will extend to other SONOFF gateways ETA in Dec.
Here’s a vid guide from SONOFF:
This is critical functionality because controlling hysteresis is important even at the cost of a short battery life. A ±1°C hysteresis is too large, and a ±2°C temperature amplitude is not acceptable for “smart” thermostat .
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When will you finally fix the hysteresis to 0.3 or 0.5 °C?
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Are there any changes to the hysteresis? Winter will be over before you change the hysteresis!
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Well said! And shouldn’t hysteresis be implemented before winter is over it will be time to set up (or set back) a Home Assistant better working thermoregulation for next winter (using TRVZB valves and software regulation like Better Thermostat). I really hope for a Sonoff/EweLink imminent implementation though!
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Why is it so difficult to implement a better hysteresis?
I’m not even talking about PID control.
Poor performance. 
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Hey there… still waiting!
Maybe at the end they are really implementing some sort of PID control before releasing some updates? Then take it easy but just give us a simple hysteresis option now! Thank you.
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Our team is still working on it. expected to be released at the end of Q1.
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Just in time for the start of spring. 
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Bu çok önemli bir sorun
görünüşe göre sonoff için değil 
Sanırım öyle
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Firmware Version 1.3.0 is Online.
99% Update-Bug is also online. Stands Hours on 99% and do not finish the Update.
No chance to upgrade Firmware now. App or Web.
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I saw the 1.3.0 firmware only on 1 trvzb (i have another 5 products) but it fails the upgrade and now it seems that it is not available anymore.
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Same here, one TRVZB out of 8 sees an update to 1.3.0 available but fails to update. This update is about summer DST saving time, letting TRVZB valve adjust its timer automatically (from update information).
I have one device with 1.3.0 but no hysteresis setting. The 1 degree difference is too big, this option is a must have.
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Out of 10 TRVZBs, it offered me an update to 1 TRVZB and it went fine, unfortunately it doesn’t solve the hysteresis yet, only DST (hopefully). In other homes after 5 + 5 TRVZBs, it doesn’t offer anything yet. There’s about a month until the time change, so hopefully it will be installed and especially if it helps, I don’t want to redo the whole plan with TRVZB by one hour again.
Otherwise, what’s your RSSI? Instead of the previous 6x ZBMINI (RSSI from 68 to 81 and sometimes none) I covered the same area with 3x ZBMINI R2 (RSSI from 63 to 75 - better coverage, better functions, smaller - ZBMINI are retiring for me), currently I already have 5x ZBMINI R2 deployed and RSSI GOOD from 55 to 70.
We’ve been waiting!
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I am really looking forward to be able to adjust the hysteresis. Its a game changer. Cant wait for the update! 
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Aplikacja 5.14 zainstalowana . Można ustawić histereze od 1 do 0.2 stopnia . Wszystko pięknie działa . Dobra robota .
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