The technology used in the A&D UM-211, to measure blood pressure, has passed in a validation study, in a general population, according to a recognised standard protocol, as published in a peer-reviewed publication.
It is recommended by the BIHS on the basis of published evidence.
Fania C, Albertini F, Palatini P. Validation of the A&D UM-211 device for office blood pressure measurement according to the European Society of Hypertension International Protocol revision 2010 Blood Press Monit. 2017 Oct;22(5):302-5. Epub: 2017 May 17. doi: 10.1097/MBP.0000000000000266. PMID: 28520592.
ESH-IP:2010 - Pass General population (Note: Results apply mainly to the use of the 22 cm to 32 cm and the 31 cm to 45 cm cuffs.)