Devices descending from K191031
5 later devices reach NightOwl through their predicates, nearest generation first.
| Generation | Number | Device | Applicant | Decided | Own descendants | Recalls |
|---|---|---|---|---|---|---|
| +1 | K242224 | Happy Health Home Sleep Test | Happy Health, Inc. | 2025 | 0 | — |
| +1 | K213463 | NightOwl | Ectosense NV | 2021 | 3 | — |
| +2 | K220028 | NightOwl | Ectosense NV | 2022 | 2 | — |
| +3 | K243268 | TipTraQ (TTQ001) | Pranaq Pte., Ltd. | 2025 | 0 | — |
| +3 | K222579 | Belun Sleep System BLS-100 | Belun Technology Company Limited | 2023 | 0 | — |