Masimo 4015 RD SET E1 Adult Single-Patient-Use Ear Sensor, 10/Box
The 4015 is the disposable Masimo E1 ear sensor; for a reusable ear clip see the 4053 TC-I.
Works With:
| Patient Cable | 20-pin cable (Zoll X Series; LIFEPAK 15 port, see Monitors): 4072 5 ft; 4792 EMS 4 ft; 4073 12 ft 25-pin right-angle cable (LIFEPAK 35, Philips Tempus Pro): 4798 EMS 4 ft Other RD cables: Masimo RD Patient Cables. LNC, Red LNC, M-LNC and rainbow RC cables do not take RD sensors.245 |
|---|---|
| Monitors | Zoll X Series, X Series Advanced: Zoll 8000-0001016 LIFEPAK 15, LIFEPAK 35: Stryker's online store files 11996-000507, though neither Stryker accessories guide lists it789 Other devices: Masimo SET MS-2000 (version 4.8 or higher) or rainbow SET MX technology1 |
| Stryker / Physio-Control Number | 11996-000507 (RD SET E1, 10-box)712 |
| Zoll Number | 8000-000101 (RD SET E1, Adult Single-Patient-Use Ear Sensor, 10 / Box)612 |
| Cross-Reference | See the Masimo 4015 row in the Masimo Part Number Cross-Reference |
Product Highlights:
- Ear concha placement: The emitter limb rests in the hollow of the inner ear (cavum conchae) and the detector limb lies flat behind the ear; the E1 is not for any other site.1
- Single patient use: Discard the sensor after one patient. X-Cal technology provides up to 168 hours of patient monitoring.1
- Accuracy: SpO2 2.5% Arms with no motion and in low perfusion, pulse rate 3 bpm, with Masimo SET.1
- Alternative site: An alternative to digit sensors when the forehead is unavailable, as in brain function monitoring, cerebral oximetry monitoring or neck stabilization.3
Specifications:
| Masimo Part Number | 4015 |
|---|---|
| SKU | MAS-4015 |
| Product Family | RD SET E1 |
| Sensor Type | Single-patient-use ear sensor, inner ear (cavum conchae)111 |
| Parameters | SpO2 and pulse rate1 |
| Patient Weight | Adult and pediatric, over 30 kg1 |
| Cable Length | 3 ft10 |
| Connector | RD SET sensor connector tab, shiny contacts up12 |
| Use | Single patient use; discard after use1 |
| Pack Quantity | Box of 10 sensors11 |
| Natural Rubber Latex | Not made with natural rubber latex111 |
| Sterility | Non-sterile1 |
| GTIN | 1084399701009911 |
| Directions for Use | Masimo LAB-9025B1 |
Who Uses This:
- Fire Departments: When digit access is not possible, the E1 gives an ear site on a Zoll X Series, with nothing to clean between patients.36
- EMS Agencies: Crews use the E1 when a finger site is unavailable: the emitter limb rests in the inner ear and the cable anchors to the shoulder.1
- Flight and Critical Care Transport: Transport teams use the E1 when brain function or cerebral oximetry sensors take the forehead, or the patient is in neck stabilization.3
- Clinics and Urgent Care: Clinics and urgent care sites use the E1 on adult and pediatric patients over 30 kg with finger deformities or limited digit access.13
Related Products:
- Masimo 4072 RD rainbow SET MD20-05 Patient Cable, 5 ft
- Masimo 4792 RD rainbow SET MD20-04 EMS Patient Cable
- Masimo 4053 RD SET TC-I Adult Reusable Ear Clip SpO2 Sensor, 3 ft
- Masimo 2918 LNCS E1 Adult Ear Sensor
- Masimo RD SET Sensors
Frequently Asked Questions:
Which patient cable does the Masimo 4015 RD SET E1 need?
An RD SET or RD rainbow SET cable, such as the 4072, 4792 or 4798.24 Hold the sensor tab with the shiny contacts up and push it into the cable until it clicks.1
What are the Stryker/Physio-Control and Zoll part numbers for the Masimo 4015?
11996-000507 is the Stryker/Physio-Control number and 8000-000101 is the Zoll number for the Masimo 4015, both listed for the box of 10.67
Will the RD SET E1 work on my monitor, and what software does it need?
It runs only on devices with Masimo SET MS-2000 (version 4.8 or higher) or Masimo rainbow SET MX technology.1 Zoll X Series and X Series Advanced: yes, Zoll item 8000-000101.6 LIFEPAK 15 and 35: send us your monitor and SpO2 cable model and we confirm the fit.7
What is the difference between the Masimo 4015 RD SET E1, the LNCS E1 2918 and the M-LNCS E1 2919?
The E1 comes in three connector versions. The 4015 uses RD SET and RD rainbow SET cables, the 2918 LNCS E1 uses LNC and Red LNC cables, and the 2919 M-LNCS E1 uses M-LNC and rainbow RC cables.2312
What is the difference between the 4015 E1 and the 4053 TC-I ear clip?
The E1 is single patient use, sits in the ear concha and has 2.5% Arms SpO2 accuracy.1 The 4053 TC-I is a reusable clip for the ear lobe or pinna, moved at least every 4 hours, with 3.5% Arms.13
Where does the Masimo 4015 go on the ear, and does it need tape?
Put the emitter limb, star forward, in the hollow of the inner ear, lay the detector limb flat behind it with the notch under the smallest part of the lobe, and stick the anchor pad to the shoulder skin. Do not tape the sensor.1 It is contraindicated for allergy to foam rubber or adhesive tape and over piercings.1
Is the Masimo 4015 reusable, and how long can one stay on a patient?
No. It is licensed for single-patient use only. One sensor provides up to 168 hours of patient monitoring; for extended monitoring move it to the opposite ear, or use a Masimo adhesive digit sensor if it cannot be moved.1
Why use an ear sensor instead of a finger sensor?
The ear may give saturation readings that are less susceptible to changes in peripheral perfusion, and it stays accessible during surgery and resuscitation or when fingers cannot be used.3 Concha placement also holds more securely than clip-style ear lobe sensors.3
Is this a genuine Masimo 4015?
Yes. We are an authorized Masimo distributor. Every Masimo 4015 ships new in its original Masimo packaging.
How fast does the Masimo 4015 ship?
Most orders ship within 1 to 2 business days. Expedited and overnight shipping are available at checkout.
How do I order the Masimo 4015 or request a quote?
Add it to your cart on this page, or contact CustomerService@pacificbiomedical.com or 844.436.3526 with SKU MAS-4015. We support net terms for agencies and hospitals and ship to all 50 states.
References
- Masimo. Directions for Use, RD SET E1 ear sensor. LAB-9025B. techdocs.masimo.com.
- Masimo. SET and rainbow Sensor and Cable Compatibility, with minimum software requirements. PLM-10747D, 2023. masimo.fr.
- Masimo. E1 Ear Sensor, single-patient-use sensor designed for the ear concha, product information. PLM-11747C, 2019. masimo.fr.
- Masimo. Directions for Use, RD rainbow SET Series patient cables. LAB-9000G. techdocs.masimo.com.
- Masimo. RD patient cables product page: RD rainbow SET MD20, R25 and RA25 cables and RD SET MD14 cables, with pin counts (masimo.co.uk). masimo.co.uk.
- Zoll. Zoll web store, RD SET E1, Adult Single-Patient-Use Ear Sensor, 10 / Box, item 8000-000101, compatible with X Series and X Series Advanced, reviewed October 2026.
- Stryker. Online store listing, Masimo RD SET E1 (SENSOR,RD SET, E1, DISPL, 10-BOX), catalog 11996-000507, filed under LIFEPAK 15 and LIFEPAK 35 equipment, reviewed October 2026.
- Stryker. LIFEPAK 35 accessories guide, pulse oximetry accessories (12/2025), page 6. stryker.com.
- Stryker. LIFEPAK 15 accessories guide, pulse oximetry accessories (02/2025), page 7. stryker.com.
- Masimo. RD SET single-patient-use sensors product page: RD SET E1 Adult SpO2 Ear Sensor, 3ft, single-patient use, over 30 kg (masimo.co.uk). masimo.co.uk.
- U.S. Food and Drug Administration. Global Unique Device Identification Database (GUDID), Masimo model 4015, RD SET E1, Adult Single-Patient Use Ear Sensor, box identifier 10843997010099 and unit identifier 00843997010092. accessgudid.nlm.nih.gov.
- Masimo Sensor Cross Reference (Stryker/Physio-Control and Zoll catalog numbers), rev. January 2025, with Stryker and Zoll catalog checks, reviewed October 2026.
- Masimo. Directions for Use, RD SET TC-I reusable tip clip sensor. LAB-9004D. techdocs.masimo.com.
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Masimo 4015 RD SET E1 Adult Single-Patient-Use Ear Sensor, 10/Box MAS-4015 |
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$324.00 10-bx
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Authorized Masimo Distributor Genuine Masimo Product Most items ship in 1 to 2 business days |
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