Zacurate 500DL
Zacurate Pro Series 500DL Fingertip Pulse Oximeter User Manual
Blood Oxygen Saturation Monitor with Silicone Cover, Batteries and Lanyard
1. Introduction
The Zacurate Pro Series 500DL Fingertip Pulse Oximeter is designed for sports enthusiasts, pilots, and anyone needing to monitor their SpO2 (blood oxygen saturation levels) and PR (Pulse Rate) on the go. This device provides accurate and reliable readings quickly and conveniently.

Figure 1: Zacurate Pro Series 500DL Fingertip Pulse Oximeter
2. Package Contents
Your Zacurate Pro Series 500DL package includes the following items:
- Zacurate Pro Series 500DL Fingertip Pulse Oximeter
- Silicone Cover
- 2 x AAA Batteries
- Lanyard
- User Manual (this document)
Figure 2: All items included in the Zacurate Pro Series 500DL package.
3. Setup
3.1 Battery Installation
The device requires two AAA batteries (included). To install:
- Open the battery cover located on the back of the device.
- Insert the two AAA batteries according to the polarity indicators (+/-) inside the compartment.
- Close the battery cover securely.
Figure 3: Battery compartment with AAA batteries.
3.2 Attaching the Lanyard
The included lanyard can be attached for convenience and portability:
- Insert the loop of the lanyard into the lanyard holes on the device.
- Thread the lanyard strap through the loop.
- Pull the lanyard strap until it is tight and secured.
Figure 4: Lanyard attachment steps.
4. Operating Instructions
4.1 Taking a Reading
To obtain an accurate reading:
- Ensure your hands and fingers are warm. Rubbing your hands together can help improve blood flow.
- Clip the oximeter onto your finger (preferably the index or middle finger) with the LED display facing you.
- Press the power button once to turn on the device.
- Keep your hand still. Movement can cause the device to reset its reading.
- Wait approximately 10-30 seconds for the readings to stabilize on the LED display.
Figure 5: Pulse Oximeter display and components.
4.2 Display Interpretation
The LED display shows two main values:
- SpO2 (%): Blood Oxygen Saturation Level. The Zacurate Pro Series 500DL can display SpO2 up to 100%.
- PR (BPM): Pulse Rate (beats per minute).
5. Important Notes for Accurate Readings
- Low Blood Perfusion: If blood flow in your finger drops below a certain level (e.g., due to cold hands), the oximeter may not function accurately. Ensure hands are warm before taking a reading.
- Movement: Any movement during a reading can cause the device to reset or provide inaccurate results. Remain still.
- Nail Polish/Fake Fingernails: Nail polish and artificial fingernails may cause false readings. If possible, use an unpolished nail or consider another application site.
- Device Use: This device is for Sports & Aviation use only and is not a medical device. Consult a healthcare professional for medical advice.
6. Maintenance
6.1 Cleaning
To clean the pulse oximeter, wipe the surface with a soft cloth dampened with alcohol. Do not immerse the device in water or any cleaning solution.
6.2 Storage
Store the device in a cool, dry place away from direct sunlight and extreme temperatures. Use the provided silicone cover to protect it from dirt and physical damage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display/reading | Low batteries; Incorrect battery installation; Finger not inserted correctly; Device malfunction. | Replace batteries; Reinsert batteries correctly; Re-position finger; Contact support. |
| Inaccurate reading | Cold fingers; Movement during reading; Nail polish/fake nails; Low blood perfusion. | Warm hands; Remain still; Remove nail polish/use different finger; Ensure good blood flow. |
| Slow reading/stabilization | Device optimizing sensitivity; User's physiological factors. | Wait up to 30 seconds for readings to stabilize. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | 500DL |
| Product Dimensions | 2.25 x 1.25 x 1.25 inches |
| Weight | 3.2 ounces |
| Measurement Accuracy | +/-2% |
| Measuring Range (SpO2) | 70-100% |
| Measuring Range (PR) | 30-250 BPM |
| Batteries | 2 x AAA (included) |
| Recommended Age | 12 years and above |
9. Warranty & Support
The Zacurate Pro Series 500DL comes with a 12-month warranty. For technical support or any questions regarding your device, please contact Zacurate's USA-based technical support team.
Phone: 832-939-8290
Email: cs@beyondmedshop.com
Website: zacurate.com
You can also refer to the official User Manual (PDF) for additional details.
10. Legal Disclaimer
Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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