This sound effect can be found on Series 2000 Sound Effects Library, which was made by Sound Ideas. Links: https://www.audiomicro.com/heart-monitor-hospital-royalty-free-stock-music-911801 https://soundideas.sourceaudio.com/track/7629117 https://soundeffects.fandom.com/wiki/Sound_Ideas,_HOSPITAL_-_HEART_MONITOR:_HEART_FAILURE,_CONSTANT_TONE#Audio_Samples