# ITC-308 calibration isue
**URL:** https://community.inkbird.com/t/itc-308-calibration-isue/166669
**Category:** Questions & Answers
**Tags:** smart-controller
**Created:** [May 3, 2025, 7:27pm UTC](https://community.inkbird.com/t/itc-308-calibration-isue/166669 "2025-05-03T19:27:07Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@User\_1701725498184](https://community.inkbird.com/u/User_1701725498184)
#### Post date: [May 3, 2025, 7:27pm UTC](https://community.inkbird.com/t/itc-308-calibration-isue/166669/1 "2025-05-03T19:27:07Z")
Hello, my 308 was siting in the corner for a year, now i need it back and it show 3c below atleast, can it lost calibration and if i calibrate it will be good or is it broken? how can i understand it
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### Author:  [@Tania](https://community.inkbird.com/u/Tania)
#### Post date: [May 9, 2025, 9:18am UTC](https://community.inkbird.com/t/itc-308-calibration-isue/166669/2 "2025-05-09T09:18:17Z")
Hello,
If the ITC-308 reads 3 degrees lower than it actually is, it can be calibrated by setting CA = 3. After calibration, if it can detect the temperature correctly, it is working properly.
