To validate noninvasive oscillometric blood pressure (NIBP) 2020 up pressure (UP) upper arm blood pressure (BP) monitoring technology according to the European Society of Hypertension International Protocol revision 2010 (ESH-IP revision 2010). According to the protocol, 33 participants were included. NIBP2020 UP technology was integrated into the BP+ host device, and common upper arm cuffs were used. The study included patients from ambulatory Hypertension Units. The validation procedure was performed exactly as required by ESH-IP revision 2010. Overall, 57.6% of the study population was female. Mean age was 45.5±16.3 years. Mean systolic blood pressure (SBP) was 142.9±30.6 mmHg and mean diastolic blood pressure (DBP) was 89.0±24.9 mmHg. The number of measurements within the difference range of up to 5 mmHg was 86 for SBP and 92 for DBP; 95 measurements of SBP and 99 of DBP were within the difference range of up to 10 mmHg, and 97 measurements of SBP and 99 measurement of DBP were in the difference range of up to 15 mmHg. Mean observer-test device differences were -0.2±4.6 mmHg for SBP and 0.6±3.1 mmHg for DBP. At least two observer-test differences were up to 5 mmHg for SBP in all participants and for DBP in 31 participants. All participants had at least one measurement with an observer-test difference of up to 5 mmHg for SBP and DBP. The NIBP2020 UP technology integrated into the BP+ host device using common upper arm cuffs passed the validation criteria according to the ESH-IP revision 2010.