The Masimo 2503 ear clip SpO2 sensor is a reusable adult pulse oximetry sensor that clips onto the earlobe to measure blood oxygen saturation (SpO2) and pulse rate. It is built to the Masimo M-LNCS TC-I (tip clip) reference specifications, uses Masimo M-LNCS technology, and has a 1.0 m cable that terminates in an M-LNCS connector.
Key Benefits of the M-LNCS TC-I Ear Sensor
- Earlobe monitoring site a practical alternative when finger sites are unavailable due to injury, poor peripheral perfusion, nail polish or patient movement of the hands.
- Reusable design one sensor serves many patients, lowering cost per reading compared with single-use adhesive sensors.
- Short 1.0 m cable keeps the bedside tidy and reduces cable snagging when used with a patient cable or bedside device.
- Cross-referenced part numbers matches Masimo 2503 / MMO4053, GE Healthcare 2068423-064, Draeger MP02983 and Unimed U903-203 for easy reordering.
Features
- Adult ear clip (tip clip) sensor style
- Masimo M-LNCS SpO2 technology
- M-LNCS connector for Masimo SET M-LNCS systems
- 1.0 m (approx. 3.3 ft) cable length
- Reusable, supplied as 1 piece per bag
Masimo 2503 Ear Clip SpO2 Sensor Specifications
| Specification | Detail |
|---|---|
| Reference Model | Masimo 2503 (M-LNCS TC-I) |
| Sensor Type | Ear Clip (Tip Clip) |
| Patient Size | Adult |
| SpO2 Technology | Masimo M-LNCS |
| Cable Length | 1.0 m (approx. 3.3 ft) |
| Lifecycle | Reusable |
| Unit | 1 piece per bag |
| Condition | New |
Cross-Reference Part Numbers
| Brand | Reference Number |
|---|---|
| Masimo | 2503 (M-LNCS TC-I), M-LNCS TC-I, MMO4053 |
| GE Healthcare | 2068423-064 |
| Draeger | MP02983 |
| Unimed | U903-203 |
Works With
- Masimo: Radius-7
- Biolight: BLT A6, BLT A8, M8500, Q3, Q6, Q7
Always confirm your monitor’s SpO2 port uses Masimo M-LNCS technology before ordering.
Use Cases for an Adult Ear SpO2 Sensor
- Hospital wards, ICU and step-down units
- Emergency departments and ambulance/transport monitoring
- Operating theatres and post-anaesthesia recovery (PACU)
- Patients with cold fingers, poor finger perfusion or hand injuries
- Exercise, stress testing and sleep studies where finger sensors are dislodged
Application and Care
- Clean the earlobe and attach the clip so the emitter and detector face each other across the lobe.
- Route the cable away from the patient’s face and secure it to reduce pulling on the clip.
- Inspect the site regularly and reposition as required by your facility protocol.
- Between patients, wipe the sensor with a mild disinfectant such as 70% isopropyl alcohol; do not immerse or autoclave.
Frequently Asked Questions
What is the Masimo 2503 SpO2 sensor?
The Masimo 2503 is the M-LNCS TC-I reusable ear clip (tip clip) SpO2 sensor for adults. This version matches its reference specifications with a 1.0 m cable and an M-LNCS connector.
What is the difference between M-LNCS TC-I and LNCS TC-I?
Both are ear clip sensors, but they use different connectors. M-LNCS TC-I (2503) has the M-LNCS connector used on Masimo M-LNCS systems, while LNCS TC-I (1895) has the older LNCS connector. They are not interchangeable without the correct patient cable.
Which monitors does this ear clip SpO2 sensor work with?
It works with the Masimo Radius-7 and Biolight BLT A6, BLT A8, M8500, Q3, Q6 and Q7, plus other systems that accept Masimo M-LNCS sensors.
Is this ear sensor reusable?
Yes. It is a reusable sensor designed to be cleaned and used on multiple patients.
What cable length does it have?
The sensor has a 1.0 m (about 3.3 ft) cable.
Is the product new?
Yes, the sensor is supplied brand new, one piece per bag.
Related SpO2 Sensors
Looking for another monitoring site or connector?
See the Masimo 1895 LNCS TC-I Ear SpO2 Sensor, the Masimo 2501 M-LNCS DCI Adult Finger Sensor, the Masimo 1969 Adult Hard Shell SpO2 Sensor, the Masimo 2258 Multi-Y SpO2 Sensor and the Philips M1194B Adult Ear Clip SpO2 Sensor.
















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