What Is the Compatible Masimo RC-8 SpO2 Adapter Cable?

The Masimo RC-8 compatible SpO2 adapter cable (IPR SKU SA-009RB-24ML) is an aftermarket patient cable that connects Masimo M-LNCS pulse oximetry sensors to monitors and defibrillators equipped with a 20-pin Masimo rainbow SET input. It is a compatible replacement, not an OEM Masimo product, built to match the fit, form, and function of Masimo’s RC-series patient cables. Masimo offers those cables in 1 ft (RC-1), 4 ft (RC-4), and 12 ft (RC-12) lengths with no 8 ft version, so this 7.9 ft (2.4 m) compatible cable, sold under the RC-8 designation, fills the gap between the 4 ft cables used in transport and EMS configurations and the 12 ft cables used at the bedside. This cable is intended for SpO2 monitoring only with M-LNCS sensors and does not support rainbow co-oximetry parameters such as SpHb, SpCO, or SpMet.

Compatible Monitor Models

This compatible adapter cable works with a broad range of Masimo pulse oximeters and Pulse CO-Oximeters, including the Radical-7, Radical (20-pin), Rad-5, Rad-5v, Rad-8, Rad-57, Rad-57c, Rad-57cm, Rad-57m, Rad-87, Rad-97, Rad-97 NIBP, Rad-97 with NomoLine Capnography, Pronto, Pronto-7, and Pronto with Next Generation SpHb. It is also compatible with Masimo-equipped configurations of the Physio-Control Lifepak 15 monitor/defibrillator and the Zoll X Series, as well as the Comen K12 Pro, Biolight Q Series (Q3, Q5, Q7), Digicare LifeWindow 9X and LifeWindow Lite LW8Vet, and Welch Allyn 64H Series and 65H Series. Always confirm that your device is configured for Masimo SET oximetry with a 20-pin rainbow-style input before ordering.

Design and Construction

The cable terminates in a 20-pin rainbow-style monitor connector on one end and an M-LNCS sensor connector on the other, allowing reusable and single-use M-LNCS sensors to be swapped at the patient end without disconnecting from the monitor. The 7.9 ft (2.4 m) length gives clinical staff enough slack to route the cable along a bed rail or stretcher without placing tension on the sensor site. The cable is reusable, supplied one per bag, and manufactured to FDA and CE standards for compatible SpO2 accessories.

When to Replace Your RC-8 SpO2 Adapter Cable

Patient cables take repeated flexing, pulling, and cleaning, and the connector ends are typically the first point of failure. Replace the cable when you see intermittent “sensor off” or “no sensor” alarms that clear when the cable is moved, signal dropouts that persist after a new sensor is installed, cracked or loose connector housings, bent or recessed pins, or cuts and kinks in the jacket. If a known-good M-LNCS sensor fails to read on a monitor that passes self-test, the patient cable is the most likely culprit and the fastest item to rule out. Keeping a spare compatible cable on hand minimizes downtime on critical monitoring channels.

Cross Reference and Interchange Part Numbers

This compatible cable cross-references to Masimo 2404 (Rainbow RC-12), 2405 (Rainbow RC-1), and 2406 (Rainbow RC-4); Draeger MP02974 and MP02975; Physio-Control 11171-000037 (RC-4) and 11171-000038 (RC-12); and Zoll 8000-0341 (RC-4) and 8000-0342 (RC-12). Aftermarket interchange numbers include Argo Biomedical ARSA-009RB-24ML, Medicable MCSA009RB24ML, and Unimed U708MR-87. Several of these references share the same 20-pin rainbow to M-LNCS interface in different cable lengths, so they identify the connector configuration rather than the exact length. This listing is the 7.9 ft (2.4 m) version.

Why Source Masimo-Compatible SpO2 Cables from IPR Medical?

IPR Medical is an ISO 9001:2015-certified independent service organization that buys, sells, repairs, and stocks parts for infusion pumps and patient monitoring equipment. Compatible SpO2 cables give biomedical departments and materials managers a cost-effective way to keep Masimo-equipped monitors and defibrillators in service without paying OEM pricing. Our team can confirm fit against your monitor model and sensor line before you order, and we also offer in-house repair services, replacement parts, and refurbished equipment, so you can source accessories and service from a single partner.

IPR Medical buys, sells, repairs, and stocks parts for the Masimo RC-8 SpO2 Adapter Cable. 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, Rainbow, 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.