What Is the Masimo Red LNC-4 Compatible SpO2 Patient Cable?

The Masimo Red LNC-4 (2055) compatible SpO2 patient cable is a reusable, aftermarket short cable that connects standard Masimo LNCS pulse oximetry sensors to Masimo rainbow SET devices with the red 20-pin patient cable connector. It lets rainbow-platform oximeters, monitors, and defibrillators use LNCS sensors for routine SpO2 and pulse rate monitoring. It is a compatible replacement, not an original Masimo part, and it is built to OEM fit, form, and function.

Compatible Monitor Models

This compatible cable is confirmed for use with Masimo Radical-7 and Radical (20-pin) monitors, Rad-5, Rad-5v, Rad-8, Rad-87, and Rad-97 devices including Rad-97 NIBP and Rad-97 with NomoLine capnography, Rad-57, Rad-57c, Rad-57cm, and Rad-57m handheld oximeters, and Pronto and Pronto-7 devices, including Pronto with Next Generation SpHb. It also fits the Physio-Control Lifepak 15, the Zoll X Series, Welch Allyn Connex 6000-series, 64-, 65-, and 67-series, and 73-, 74-, and 75-series Connex Spot monitors, and the Comen K12 Pro. The device must have a red Masimo rainbow SET patient cable connector; devices with the gray Masimo SET connector require a standard LNCS cable instead.

Design and Construction

The short 3.9 ft (1.2 m) cable is sized for defibrillators, handheld oximeters, and spot-check monitors where the device stays close to the patient. The monitor end uses the red 20-pin rainbow connector, and the sensor end accepts Masimo LNCS sensors in adult, pediatric, infant, and neonatal sizes, in both reusable and single-patient-use styles. Rainbow parameters such as SpHb and SpCO require rainbow sensors and cables; with LNCS sensors, this cable supports standard SpO2 and pulse rate monitoring. The cable is reusable after cleaning according to facility protocol and ships one per bag.

When to Replace Your Masimo Red LNC-4 Cable

Replace the cable when the device shows “SpO2 sensor off,” “no cable,” “replace cable,” or cable/sensor fault messages with a known-good LNCS sensor, when saturation or pleth readings drop out as the cable is moved, or when you find a cracked jacket, a loose sensor latch, or bent or corroded pins at the red connector. Cables on defibrillators and handheld devices are coiled, stowed, and unpacked often, so inspect the strain reliefs at both ends during routine checks.

Cross Reference and Interchange Part Numbers

This compatible Masimo Red LNC-4 patient cable, IPR Medical SKU SA-009RB-12LS, cross-references to Masimo 2055 (Red LNC-4), GE Healthcare 2059005-001, Physio-Control 11996-000323, Zoll 8000-0330, Draeger MP02991 and MP03030, and DRE 80032MOR. It also interchanges with Unimed U704M-87. For devices with the gray Masimo SET connector, see the compatible Masimo LNC-4 (2017) cable, IPR Medical SKU SA-008RB-12LS.

Why Source SpO2 Cables from IPR Medical?

IPR Medical is an ISO 9001:2015-certified independent service organization that buys, sells, repairs, and stocks parts for patient monitoring and infusion equipment. We carry compatible Masimo red and gray connector cables, Nellcor, and TruSignal SpO2 accessories for monitors, oximeters, and defibrillators, so biomedical teams can standardize sourcing at lower cost than OEM. Our team can help identify each device’s SpO2 technology and connector and support your equipment with in-house repair services.

IPR Medical buys, sells, repairs, and stocks parts for Masimo rainbow SET oximeters, monitors, and defibrillators. Contact us at 855-477-8866 or cs@iprmed.com.

Trademark Notice: This is a compatible aftermarket product. It is not manufactured, sold, licensed, or endorsed by Masimo, or any other manufacturer or supplier named on this page. Masimo, LNCS, and all other brand names, model names, and part numbers shown are trademarks of their respective owners and are used on this page only to identify the equipment this product is compatible with and the OEM parts it can replace, consistent with nominative fair use. IPR Medical is an ISO 9001:2015-certified independent service organization; references to OEM equipment describe the equipment we sell, service, and support, and do not indicate any affiliation with, sponsorship by, or endorsement from its manufacturer.