This is a confirmatory study without any intervention. It is an uncontrolled, non-randomized and open-label study with measurements made with comparators, and it has a preset hypothesis for the primary endpoint. There are no similar devices to VitalThings Guardian M10 / M10 mobile on the market, consequently one or more different types of devices must be used as comparators.

The purpose of the clinician investigation is to validate a claim made for the investigational device performance. The objective is to confirm that the device performs at +/- 1.2 respirations per minute (RPM) accuracy against the identified comparator device, and compare performance to the standard of care as documented in the literature. The study will be conducted with patients admitted to the emergency ward after the initial treatment and examination.

Inclusion Criteria:

• Adult patients admitted to the Emergency Ward (EW)

Exclusion Criteria:

• Under age (below 18 years) and subjects not able to provide informed consent themselves. Subjects dismissed from the EW rooms within 30 minutes from first registration are removed from the study.

The EW study population is beneficial to the study as it offers an unfiltered study population with a broad cross-section of potential admission reasons and diagnoses in a short period of time. Any patient that needs acute treatment/examination (typically triaged as "red") will per standard of care go into dedicated EW rooms and not be part of this study. The safe participation of each patient will be evaluated by a specialist in emergency medicine (PI) before invitation to participate.