Masimo RD SET NEO 4003 Disposable SpO2 Sensor: Reliable Neonatal Monitoring with Advanced Masimo SET® Technology

In neonatal intensive care units (NICUs) and adult monitoring settings, accurate oxygen saturation (SpO2) readings can be the difference between early intervention and missed events. The Masimo RD SET NEO 4003 disposable SpO2 finger sensor delivers industry-leading performance in the most challenging conditions—motion, low perfusion, and delicate neonatal skin.

Designed as a single-patient-use adhesive sensor, the Masimo 4003 RD SET NEO combines comfort, infection control, and Masimo’s proprietary SET® Measure-through Motion and Low Perfusion™ technology. Whether you’re caring for premature infants under 3 kg or adult patients over 40 kg, this sensor provides reliable, clinically proven results.

What Is the Masimo RD SET NEO 4003?

The Masimo 4003 RD SET NEO is a lightweight, adhesive, single-patient-use SpO2 sensor specifically engineered for neonatal and select adult monitoring. It connects seamlessly to Masimo RD SET–enabled pulse oximeters and monitors, including popular models like the Rad-97 and compatible defibrillators. Packaged in boxes of 20 and supplied non-sterile (with optional replacement tape 4047), the sensor is latex-free and built for maximum patient comfort without sacrificing signal quality. Its flat, soft cable and low-profile optical components make it ideal for tiny hands, feet, or adult fingers.

Key Features That Set It Apart

• Masimo SET® Measure-through Motion and Low Perfusion™ Technology — Delivers accurate SpO2 and pulse rate readings even when patients move or have weak peripheral perfusion—common in neonates.

• Ultra-lightweight & patient-friendly design — Flat sensor cable with smooth edges lies comfortably on the hand or foot. Low-profile optics reduce pressure on delicate skin.

• Single-patient-use adhesive — Minimizes cross-contamination risk in high-acuity environments like NICUs.

• Dual patient compatibility — Perfect for neonates <3 kg (hand or foot placement) and adults >40 kg (finger or toe).

• Durable yet gentle — Not made with natural rubber latex; designed to maximize comfort and support hospital green initiatives by reducing waste through reliable single-use performance.

Why Masimo SET® Technology Matters in Neonatal Care

Conventional pulse oximeters often struggle with motion artifact and low perfusion, leading to false alarms and missed true hypoxic events. Masimo SET® uses advanced signal processing to separate arterial signals from venous motion and noise. Clinical studies show Masimo SET®:

• Reduces false alarms dramatically while identifying more true hypoxic and bradycardic events in newborns.

• Provides faster, more reliable readings during neonatal resuscitation.

• Maintains high accuracy (ARMS of 1.5% for SpO2 in motion and no-motion conditions for the RD SET series).

For NICU teams, this means fewer unnecessary alarms, better workflow, and—most importantly—improved patient safety.

Technical Specifications 

• Patient weight range: <3 kg (neonatal – hand/foot) or >40 kg (adult – finger/toe)

• SpO2 accuracy (70–100%): 1.5% ARMS (no motion & motion)

• Pulse rate accuracy: 3 bpm (no motion), 5 bpm (motion)

• Cable design: Flat, lightweight, soft with smooth edges

• Packaging: 20 sensors per box

• Compatibility: All Masimo RD SET–enabled devices

• Other: Latex-free, non-sterile, single-patient use

Applications & Clinical Benefits

The Masimo RD SET NEO 4003 excels in:

• Neonatal intensive care and transport

• Labor & delivery monitoring

• Adult critical care when disposable sensors are preferred

• Any setting where infection control and patient comfort are priorities

Clinicians love the easy application, secure adhesion, and minimal skin irritation—critical for fragile premature infants.

Why Buy from EMS Cables & Sensors?

At EMS Cables & Sensors, we stock genuine Masimo 4003 RD SET NEO sensors at competitive pricing with fast shipping. We specialize in high-quality medical cables and sensors, ensuring every product meets OEM standards for performance and reliability. Shop the Masimo RD SET NEO 4003 Now

Masimo RD SET NEO 4003

When every beat and breath counts, the Masimo RD SET NEO 4003 disposable SpO2 sensor gives you the confidence of Masimo’s gold-standard technology in a comfortable, single-use format. Trusted by NICUs and hospitals worldwide, it’s the smart choice for accurate, motion-tolerant monitoring. Ready to upgrade your SpO2 monitoring? Browse our full selection of Masimo sensors and cables today.