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A&D Medical UA-611Plus vs Rossmax X9

Every spec side by side, from each maker's published figures.

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A&D MedicalUA-611PlusRossmaxX9
Overview
Released––
Measuring
TypeUpper armUpper arm
Clinically validatedYes–
Irregular heartbeat detectionYesYes
AFib detection or ECGYesYes
MethodAutomatic oscillometric measurement with fuzzy-logic-controlled inflation; designed for adult home useAutomatic oscillometric measurement or auscultatory mode using a separate stethoscope and marker button. Intended for adults at home and in clinical settings. First-sale date unresolved
AccuracyMaker specification ±3 mmHg pressure and ±5% pulse; pressure range 0–299 mmHg, systolic 60–279 mmHg, diastolic 40–200 mmHg and pulse 40–180 beats/minPressure 30–260 mmHg; pulse 40–199 bpm. Maker accuracy ±3 mmHg pressure and ±5% pulse
Clinical validationSTRIDE BP lists UA-611Plus as equivalent to the validated UA-1020, citing 2013 BHS 1993 studies; this is approved device equivalence, not a direct UA-611Plus validation study. A&D's shared manual separately states ISO 81060-2:2013 clinical testingSTRIDE BP lists X9 through approved equivalence to Rossmax AC1000f, whose adult study used BHS 1993 and was published in 2020; this is not a direct X9 study. Its generic Bluetooth listing conflicts with this non-Bluetooth maker variant
FeaturesIHB/AFib screening indicator, pressure progress bar, WHO classification indicator, stored-reading average and automatic power-off; maker says AFib screening is for monitoring and not diagnosisPARR flags AFib, premature beats, tachycardia above 100 bpm and bradycardia below 55 bpm, including combined findings. Pulse screening, not ECG. Cuff-fit, movement and hypertension indicators
Cuff
Cuff fits22–32 cm16–46 cm
CuffSupplied latex-free and metal-free cuff fits 22–32 cm; optional small 16–24 cm, semi-large 23–37 cm, wide-range 22–42 cm and large 31–45 cm cuffs, sold separatelySupplied latex-free small 16–26 cm, medium 24–36 cm and large 34–46 cm cuffs; overall range requires choosing the appropriate cuff. Cuff holder
Connections and memory
Users–1
Readings stored6090
Bluetooth and appNoNo
MemoryLast 60 blood pressure and pulse measurements, with stored-reading average; no separate user memories listedSingle 90-reading history with date/time for automatic measurements; oldest replaced when full. Auscultatory readings are not included in this stored automatic-mode history
AppNo Bluetooth; readings can be recorded manuallyNo Bluetooth on this maker variant. Shared-family guide documents an optional specially designed USB cable for PC transfer; Rossmax now says BP Manager software is discontinued and no longer available. Monitor remains independently usable
PowerFour AA 1.5 V batteries according to the exact manual; approximately 700 measurements with LR6 alkaline or 200 with R6P manganese batteries at 180 mmHg and 23°C. UA-611Plus has no DC socket; the adapter in the shared manual applies only to UA-651PlusFour AA alkaline cells, DC 6 V; supplied 6 V mains adaptor rated at least 600 mA. Automatic shutdown after one minute without key operation
Design
Display detailsSystolic pressure, diastolic pressure and pulse with battery, IHB/AFib and pressure/classification indicatorsBacklit 99 × 115 mm LCD with mode and pulse-arrhythmia flags; IP21
SizeApproximately 96 × 68 × 130 mm (width × height × depth); approximately 240 g excluding batteries; maker lists IP20, without water protection173 × 115 × 64.5 mm (L × W × H); maker guide lists 410 g without batteries
In the boxUK pack includes UA-611Plus monitor, 22–32 cm cuff, instruction manual and four batteries; product-page box list says AAA but its linked exact manual specifies AABatteries, small/medium/large cuffs, 6 V adaptor, instruction manual and zipper bag; PC cable optional. Stethoscope not listed as supplied

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