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September 08, 2026 2 min read
Trilingual instruction guide for the LifeSource / A&D Medical Easy-Fit and Optimized Cuff line of replacement blood pressure monitor cuffs.
Instruction guide for the LifeSource/A&D Medical Easy-Fit™ and Optimized Cuff line of replacement cuffs for digital blood pressure monitors (English instructions; French and Spanish sections also included in the original PDF).
This cuff was designed for use with LifeSource and A&D Medical Blood Pressure Monitors. Using the correctly sized cuff is important for an accurate reading — an oversized cuff produces artificially low readings, while an undersized cuff produces artificially high readings.
With your arm hanging at your side, measure the circumference of your upper arm at the midpoint between shoulder and elbow:
| Arm Size | Recommended Cuff | Replacement Model # |
|---|---|---|
| 6.3–9.4" (16–24 cm) | Small Cuff | UA-279 |
| 9.4–14.2" (24–36 cm) | Medium Cuff | UA-280 |
| 9–17" (23–43 cm) | Easy-Fit™ Cuff | UA-380 |
| 14.2–17.7" (36–45 cm) | Large Cuff | UA-281 |
Most cuffs have an Index Mark indicator — after placing the cuff on your arm, if the Index Mark points within the Proper Fit Range, you have the correct size. If it points outside that range, contact A&D Medical at 1-888-726-9966 (Canada: 1-800-461-0991) for a replacement.
Most models require an air connector plug to attach the cuff tube to the monitor:
| Model | Connector |
|---|---|
| UA-704, UA-705 | T-Connector |
| All other models | L-Connector (either connector can be used) |
| UA-787EJ, UA-853AC, UA-789AC | No connector required |
Refer to the instruction manual included with your monitor for full operation details.
This LifeSource blood pressure product is covered by a Lifetime Warranty — visit www.LifeSourceOnline.com for warranty registration. For setup or operation assistance, call the LifeSource Health Line at 1-888-726-9966 (Toll-Free) or 1-800-461-0991 (Canada) before contacting your retailer.
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