# Zigbee questions **URL:** \ **Category:** Questions & Help\ **Created:** [July 14, 2023, 8:05pm UTC](https://community.homey.app/t/zigbee-questions/84600 "2023-07-14T20:05:34Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![GD91](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gd91/32/78099_2.png) [@GD91](https://community.homey.app/u/GD91)\ **Post date:** [July 14, 2023, 8:05pm UTC](https://community.homey.app/t/zigbee-questions/84600/1 "2023-07-14T20:05:34Z")
I have number of temperature items. I Set the following parameters : Temp max interval : 60 (s), Temp min change : 10 (0,1°) And the most often, I get one measure every hour, or half an hour … And the measures differs of more than 0,1° … I do not understand what happens ! And as I was planning tu use these measures to manage my heating this winter … it seems I got a big issue ! ---
**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\ **Post date:** [July 14, 2023, 11:23pm UTC](https://community.homey.app/t/zigbee-questions/84600/2 "2023-07-14T23:23:25Z")
For most devices: When a value is changed (more than the minimum step), it sends an update. The frequency is limited b/c battery life, but a change should be reported within seconds. It also depends on the brand, model and app, and what users can set > [@GD91](#): > > Temp min change : 10 (0,1°) What does the `10` mean when you want a sensitivity of 0.1? Can you show a screenshot of the device settings? What’s the brand + model sensor? (Btw, do you trust Homey + wireless sensors enough with your heating system?) ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [July 15, 2023, 4:28am UTC](https://community.homey.app/t/zigbee-questions/84600/3 "2023-07-15T04:28:06Z")
> [@GD91](#): > > And as I was planning tu use these measures to manage my heating this winter I have yet to see a cheap temperature sensor that’s accurate to 0.1°C ---
**Author:** ![GD91](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gd91/32/78099_2.png) [@GD91](https://community.homey.app/u/GD91)\ **Post date:** [July 15, 2023, 12:50pm UTC](https://community.homey.app/t/zigbee-questions/84600/4 "2023-07-15T12:50:43Z")
I tried to restart the Homey, but without any result … These are the device setting and the curves : ![Param](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/6/0/60b5b90297788cf369fde7b9fd33ba22b9f2c9fd.png) ![Courbes](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/4/2/42907fc861cd7f37a06c51ef54bbeb998db22748.png) ---
**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\ **Post date:** [July 15, 2023, 3:39pm UTC](https://community.homey.app/t/zigbee-questions/84600/5 "2023-07-15T15:39:12Z")
![Screenshot_20230715-173635_Chrome](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/4/e/4e2644a1773a84331c576bb34cabdf593f73d0b0.jpeg) My thoughts: - Temp min change should be 0.1 instead of 10 While to me it seems, it is the minimum difference in values it should act on. (And a hint for Hum change, it should be 1 instead of 100 I guess) ---
**Author:** ![GD91](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gd91/32/78099_2.png) [@GD91](https://community.homey.app/u/GD91)\ **Post date:** [July 15, 2023, 5:15pm UTC](https://community.homey.app/t/zigbee-questions/84600/6 "2023-07-15T17:15:49Z")
In fact, I don’t care about humidity ! That’s why … Regarding temperature, I understand that 10 = 0,1° ![Légende](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/f/7/f7aaf2d5a3b55460fa57f565a10fee29dd7d1771.png) I wonder if a device is not fed up the channel ? Because in the past, didn’t encounter this issue. I’m going to reset the Zigbee network … ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [July 15, 2023, 7:04pm UTC](https://community.homey.app/t/zigbee-questions/84600/7 "2023-07-15T19:04:10Z")
Are you keeping the device awake while changing these settings? ---
**Author:** ![GD91](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gd91/32/78099_2.png) [@GD91](https://community.homey.app/u/GD91)\ **Post date:** [July 15, 2023, 7:43pm UTC](https://community.homey.app/t/zigbee-questions/84600/8 "2023-07-15T19:43:43Z")
I don’t understand the meaning of ‘awake’ in this case … I restart the app. I’ve just reset the Zigbee network. I’m now on channel 25 (WIFI Channel 1) which is fine. I repair one device, 30 minutes ago. I got a strange warning : repair impossible, this item is not the right one … But , finally, it is successful But I still got the same issue : the measure known by Homey (29,1 since 2 hours, it says) differs from this on the device (28,9) After that, I delete the device and pair it again. And, now, it seems working correctly … I breathe on the device and it reacts immediatly ![Courbe correcte](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/d/7/d76ca07af6792a120b34839af3d6c953ab49edee.png) I don,t understand the why of this issue … probably a big bug within Homey ?? But how to investigate ?? ---
**Author:** ![GD91](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gd91/32/78099_2.png) [@GD91](https://community.homey.app/u/GD91)\ **Post date:** [July 15, 2023, 7:52pm UTC](https://community.homey.app/t/zigbee-questions/84600/9 "2023-07-15T19:52:08Z")
After a while, the issue seems to be still here ! Homey says 29,6° and the device : 29,2° The parameters of the device are 1s, 0.1° ---
**Author:** ![GD91](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gd91/32/78099_2.png) [@GD91](https://community.homey.app/u/GD91)\ **Post date:** [July 16, 2023, 7:38am UTC](https://community.homey.app/t/zigbee-questions/84600/10 "2023-07-16T07:38:12Z")
At first try, the humidity curve is reactive while the temperature curve seems stuck on … ![2 courbes](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/5/5/55ade5fbb9d637e769371a25cf90b5f8d7941a8b.png) Searching info on this device : SNZB-02D, I saw that this issue seems very common. The probleme would be due to a bad (partial) initialization while the pairing. So, I try to repair and during the insertion, I press the button on the device several times. And now, it is working correctly ! Neverthemore, the minimal increment seems to be 0,2°, even on the device ![2 courbes OK](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/6/5/6517528c6b3ed4cb368f4793379988cd7acdaf0f.png) screen