In this study the inestigators aim to validate the performance of Sleepiz One+ for sleep apnea detection during routine diagnostic sleep studies. Patients who are prescribed polysomnography study will be asked to participate and undergo a simultaneous sleep recording with radar sensor-based device.

Inclusion Criteria:

• Age >18years
• Ability and consent to undergo electrophysiological routine assessment
• Patients suspected to suffer from sleep apnea or any other sleep related disorder

Exclusion Criteria:

• Previous enrollment into the current study,
• Enrollment of the investigator, his/her family members and other dependent persons
• Cardiac pacemaker or another implanted electrical device
• Women who are pregnant or breastfeeding
• Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia, delirium etc. of the participant