Three fingertip pulse oximeters to compare
Australian listings checked 18 September 2026: Beurer PO30: $99 at JB Hi-Fi; Heart Sure A320: $64.95 at Chemist Direct. For the Nonin 9590, confirm the tax-inclusive total and delivery estimate with DocStock: its listing warns of backorder or direct-from-manufacturer supply. Prices and stock can change.
Beurer PO30
A straightforward device to discuss with your clinician, with a colour display and five-year advertised warranty. This is a usability-and-support recommendation, not a finding that it is clinically more accurate than the alternatives.
Compare the Beurer PO30 for uncomplicated home spot checks, the Heart Sure A320 for a lower purchase price, and the Nonin Onyx Vantage 9590 for frequent use. Choose the device and monitoring routine with your healthcare professional.
A pulse oximeter estimates oxygen saturation, displayed as SpO₂, and measures pulse rate. The TGA advises that home use works best within doctor-guided care. A reading should be considered alongside symptoms and other clinical information, never used alone to judge how ill someone is.
Symptoms come first
Call Triple Zero (000) if someone is short of breath and cannot speak normally, has chest pain, blue lips, or becomes drowsy or confused. Do not wait for an oximeter result before seeking emergency help. Healthdirect’s emergency guidance.
The shortlist
- Beurer PO30: home-use pick for simple operation and warranty support.
- Heart Sure A320: value alternative through a pharmacy supplier.
- Nonin Onyx Vantage 9590: premium spot-check option; confirm availability before ordering.
How we chose
We compared manufacturer information, Australian supplier listings, controls, display features, warranty and intended use. We have not performed a clinical validation study or hands-on accuracy comparison. The labels in this guide describe buying roles; they do not establish a medical performance ranking.
We favour identifiable models and suppliers with product documentation. Marketing terms such as “professional” and “high accuracy” are not enough by themselves. A clinician’s recommendation for a particular device or sensor should take priority over a general buying guide.
1. Beurer PO30
Simple operation and a longer advertised warranty
Beurer lists a single-button design, colour screen, graphical pulse indication, battery indicator and automatic shut-off. The PO30 runs on two AAA batteries. Its current official specifications say it has no connectivity, perfusion-index measurement or alarm function.
JB Hi-Fi lists the model for $99 with a five-year manufacturer warranty and ARTG identifier 352135. Check the exact package and local delivery or collection availability. The official and retailer pages describe display formats differently, so we would check the supplied manual rather than buy based on a specific orientation count.
For someone who wants a simple reading without a phone, this is a practical starting point. There is no need to pay for an app feature you will not use, but a clinician may recommend a different device for a particular monitoring need.
Reasons to consider
- One-button operation
- Colour display and pulse graphic
- Five-year advertised warranty
What to know
- No Bluetooth history
- No perfusion-index number
- Not an alarm-equipped continuous monitor
2. Heart Sure A320
A lower-cost pharmacy option
Chemist Direct lists the A320 at $64.95 and in stock when checked. Its published features include SpO₂ and pulse-rate readings, a dual-colour OLED display, multiple display modes and a two-year warranty. The listing identifies ARTG 254932.
The A320 is worth comparing when the Beurer’s higher price is difficult to justify. Read the supplied instructions before using any alarm settings; the presence of an alarm feature does not establish suitability for unattended or continuous monitoring.
Before ordering, check that the seller is supplying the A320 pictured, rather than a similarly named connected model. Ask the pharmacy about demonstration, warranty handling and the correct fit for the intended user.
Reasons to consider
- Lower checked purchase price
- Australian pharmacy supplier
- Two-year listed warranty
What to know
- Less warranty coverage than the Beurer
- Confirm the exact model and instructions
- An alarm feature is not a substitute for observation
3. Nonin Onyx Vantage 9590
A specialist choice for frequent spot checks
Nonin describes the 9590 as a spot-check device for adult and paediatric users within its stated fit range. It switches on when applied and off when removed, and provides a bright LED display with a three-colour pulse-quality indicator.
The manufacturer specifies a digit thickness range of 8–25.4mm, up to 6,000 spot checks from two AAA batteries and a four-year warranty. Those are useful practical differences for repeated use; they do not make every reading infallible.
DocStock offers the black version but currently warns that it may be backordered or shipped from the manufacturer. Confirm the final price, delivery estimate and warranty arrangements before paying. It is a poor choice for an urgent purchase unless the supplier confirms immediate availability.
The extra spend is most relevant when frequent use, fit and construction matter. For an occasional household reading, discuss whether a less expensive suitable device would meet the same need.
See Nonin Onyx Vantage 9590 listing and current availability
Reasons to consider
- Automatic on/off operation
- Pulse-quality indicator
- Four-year manufacturer warranty
What to know
- Higher purchase cost
- Supplier delivery delay possible
- Designed for spot checking
Compare the practical differences
| Model | Main reason to compare | Important limitation |
|---|---|---|
| Beurer PO30 | Simple controls; five-year advertised warranty | No app connection or alarm function |
| Heart Sure A320 | Lower checked pharmacy price | Read the exact model’s instructions and alarm limitations |
| Nonin Onyx Vantage 9590 | Frequent spot checks; pulse-quality indicator | Higher cost and supplier lead time |
Start with the monitoring plan
Before buying, ask your healthcare professional whether home oxygen monitoring will be useful for you. If it is, request clear instructions about when to measure, what to record and what should prompt a call or urgent assessment.
Keep that plan with the device. A household member helping with readings should know where it is and whom to contact. A purchase decision is easier when you know whether the priority is a simple display, a particular sensor fit or a device your clinical team already uses.
Check the exact model and Australian supply
Match the model on the listing, box and instructions. Ask the supplier to identify the Australian sponsor and the applicable ARTG entry. Overseas regulatory logos should not be treated as a substitute for checking Australian supply details.
ARTG inclusion is not a comparative award for accuracy. It does not establish that one device is the best choice for your circumstances. Read the intended use, restrictions and warranty conditions as well as the headline features.
Retain the receipt and model details. If a device behaves unexpectedly, those details help the supplier identify the correct manual, replacement process or support contact.
Display, fit and signal quality
A display is useful only if the person taking readings can comfortably read it. Look at the actual number size, screen orientation and controls. If a carer will read the screen from another angle, ask for a demonstration or review the manual before ordering.
Signal-quality indicators can help the operator recognise a poor measurement, but they are not diagnoses. A perfusion index, waveform or coloured light should be interpreted according to that particular device’s instructions.
Check age and finger-size restrictions. Do not assume an adult fingertip clip will fit a baby or young child. Nonin specifies a fit range for the 9590, but the correct device for a child should still be selected with clinical advice.
Taking a reading
- Follow the device manual and your clinician’s monitoring instructions.
- Use the specified finger position and a correctly fitted sensor.
- Keep the hand still and address cold fingers or other conditions that interfere with measurement.
- Allow the display to settle before recording a result.
- Record the reading and relevant symptoms if your care team has requested a log.
- Follow your action plan for unexpected readings; do not delay urgent help to repeat measurements.
Nail products, movement and poor peripheral circulation can interfere with readings. The TGA also warns that oxygen levels may be overestimated in people with darker skin. A reassuring number must not override concerning symptoms. Read the TGA’s pulse oximeter limitations guidance.
Keep a useful record
If your clinician wants a log, ask which details are useful and how often to record them. A simple notebook may be enough. Agree on whether to include the time, oxygen reading, pulse, symptoms and anything unusual about the measurement conditions.
Recording every small fluctuation is not necessarily helpful. The purpose is to give the care team the information they asked for, using a consistent routine. If you want automatic records, confirm that the exact device supports this; none of our three picks is being recommended here as an app-connected logger.
What a fingertip device cannot tell you
An SpO₂ result is an estimate, not a diagnosis of the cause of breathlessness. It does not replace clinical assessment. Follow the target range and response plan provided for you instead of adopting a universal “safe” number from a shopping guide.
If you are becoming increasingly breathless, seek medical assessment. In an emergency, symptoms determine the need for help: a device reading should not delay the call. Healthdirect explains when breathlessness needs urgent care.
Cleaning and storage
Use the cleaning method specified for the exact model. Avoid improvising with immersion, harsh chemicals or heat. Check battery orientation, keep the device dry as directed, and inspect it for damage before use.
Store the instructions and spare batteries where the intended user or carer can find them. Follow the manual’s long-term storage guidance, including battery removal when required. If the device is shared, ask the supplier about an appropriate cleaning routine between users.
Common buying mistakes
- Choosing by price alone: check the model, supplier and instructions first.
- Confusing similarly named products: connectivity and features may differ.
- Assuming more numbers mean better care: choose features you understand and need.
- Ignoring fit: a device must suit the person using it.
- Expecting instant delivery: specialist equipment may have a lead time.
- Buying for overnight use without checking: a spot-check device is not automatically suitable for continuous monitoring.
Frequently asked questions
Which is the best starting point for home use?
The Beurer PO30 is our practical home pick for its controls, display and warranty. Confirm that it meets your clinician’s requirements. This recommendation does not establish superior clinical accuracy.
Is the cheapest option necessarily inaccurate?
Price alone cannot establish accuracy. Look for identifiable equipment, suitable documentation and the right intended use. We have not clinically tested these devices against one another.
Why do readings change?
Movement, fit and measurement conditions can contribute to variation. Follow the manual and your monitoring plan. If symptoms concern you, seek advice rather than repeatedly measuring until a preferred number appears.
Can I use one overnight?
Do not assume so. Beurer’s instructions exclude continuous monitoring, and Nonin describes the 9590 as a spot-check device. Ask your clinician about equipment designed for the monitoring you need.
Is the Nonin worth the extra cost?
Its operating design and warranty may justify the spend for frequent users. For occasional checks, ask whether a lower-cost suitable model would meet your needs. Confirm supply timing before ordering.
Our verdict
Start by comparing the Beurer PO30 with the Heart Sure A320 for clinician-guided home spot checks. The Beurer offers a longer advertised warranty; the Heart Sure has a lower checked purchase price.
Consider the Nonin Onyx Vantage 9590 when frequent use and your clinical requirements justify the additional cost. Whatever you choose, use the reading alongside symptoms and the action plan from your healthcare professional.
Sources and product checks
Manufacturer information and Australian supplier listings checked on 18 September 2026. Prices, availability and product revisions may change. Product performance statements are published claims, not results of testing by us.
- Beurer: PO30 specifications and instructions
- JB Hi-Fi: PO30 Australian price and warranty
- Chemist Direct: Heart Sure A320 listing
- Nonin: Onyx Vantage 9590 intended use and specifications
- DocStock: Nonin Australian supply and lead-time warning
- TGA: pulse oximeter limitations and skin pigmentation
- TGA: Australian Register of Therapeutic Goods
- Healthdirect: breathlessness and emergency symptoms
Need a second opinion?
Ask Adrian before making the decision.
Tell us what you are choosing between, what matters most to you and what you have already checked.