# Noob - Setting up Axioma Qalcosonic E3 Heat Monitor device - all preconfigured!

**URL:** <https://www.thethingsnetwork.org/forum/t/noob-setting-up-axioma-qalcosonic-e3-heat-monitor-device-all-preconfigured/38554>\
**Category:** Hardware\
**Created:** [July 15, 2020, 9:30am UTC](https://www.thethingsnetwork.org/forum/t/noob-setting-up-axioma-qalcosonic-e3-heat-monitor-device-all-preconfigured/38554 "2020-07-15T09:30:13Z")\
**Posts on this page:** 1\
**Showing post:** 18

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**Author:** ![arjanvanb](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/arjanvanb/32/46626_2.png) [@arjanvanb](https://www.thethingsnetwork.org/forum/u/arjanvanb)\
**Post date:** [July 17, 2020, 4:05pm UTC](https://www.thethingsnetwork.org/forum/t/noob-setting-up-axioma-qalcosonic-e3-heat-monitor-device-all-preconfigured/38554/18 "2020-07-17T16:05:57Z")

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Yes, if the configuration of device and TTN match, then you should see an Activation (orange icon) in the application and device’s Data page, **if** you have that open at the time the Join Request is received. And even if not open, you should see a DevAddr on the device’s Overview page after an accepted Join Request.

From the screenshots, it seems the AppEUI and DevEUI are correct. You can use the online decoder with the AppKey to see if the AppKey is correct too (leave the field for NwkSKey empty); probably not. You may want to reverse the bytes in the key (say, from `01 02 03 ... 15 16` to `16 15 ... 03 02 01`) to see if that helps in that online decoder. And if not, use some of the other values that the supplier gave you? It would not be the first time a supplier messed up the keys:

> [@No join response for tabs temperature sensor](https://www.thethingsnetwork.org/forum/t/no-join-response-for-tabs-temperature-sensor/34767/7):
>
> i checked the MIC with the online decoder you mentioned - and it was invalid  
> i copied app eui and dev eui from the join message, so only the app key could have been wrong  
> (but it definitely was the pre-defined value given to me by the distributor of the tabs sensor device!)  
> i went with my gut feeling and just tried using the given nwkskey in place of the app key - and bingo! i got a valid MIC

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