# It’s-308 displaying negative numbers with two dots above the negative

**URL:** <https://community.inkbird.com/t/it-s-308-displaying-negative-numbers-with-two-dots-above-the-negative/46080>\
**Category:** Questions & Answers\
**Tags:** smart-controller\
**Created:** [May 2, 2023, 12:04pm UTC](https://community.inkbird.com/t/it-s-308-displaying-negative-numbers-with-two-dots-above-the-negative/46080 "2023-05-02T12:04:16Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Rpett54](https://avatars.discourse-cdn.com/v4/letter/r/aeb1de/32.png) [@Rpett54](https://community.inkbird.com/u/Rpett54)\
**Post date:** [May 2, 2023, 12:04pm UTC](https://community.inkbird.com/t/it-s-308-displaying-negative-numbers-with-two-dots-above-the-negative/46080/1 "2023-05-02T12:04:16Z")

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![image](https://canada1.discourse-cdn.com/flex031/uploads/inkbird1/original/2X/7/79388762deab65391aa5301ada0120998ec04d58.jpeg)

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**Author:** ![Tania](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.inkbird.com/tania/32/88_2.png) [@Tania](https://community.inkbird.com/u/Tania)\
**Post date:** [May 3, 2023, 3:03am UTC](https://community.inkbird.com/t/it-s-308-displaying-negative-numbers-with-two-dots-above-the-negative/46080/2 "2023-05-03T03:03:16Z")

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Hello,  
Please check that the heater and cooler used are within the 100V-240V, 10A power range.  
If the ITC-308 is restarted, will it display normally?  
If not, please email to [support@inkbird.com](mailto:support@inkbird.com) with order details and the link of this post, my colleagues will provide after-sales service.