Model：AT20B-SM / AT21B-SM
| File Name | Date of Update |
|---|---|
| AT20B-SM and AT21B-SM EU DECLARATION OF CONFORMITY (382KB) | 04/01/2026 |
| Version | Updated contents | Updated on |
|---|---|---|
| 7st Edition | --- | Apr. 1, 2026 |
| 6st Edition | --- | Sept. 7, 2022 |
| 5st Edition | --- | Dec. 1, 2021 |
| 4st Edition | --- | Sept. 10, 2019 |
| 3st Edition | --- | Mar. 15, 2017 |
| 2st Edition | --- | May. 20, 2016 |
| 1st Edition | --- | Dec. 21, 2012 |
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