What Is the Compatible Masimo 4054 RD SET Y-I Multi-Site Sensor?

The Masimo 4054 (RD SET Y-I) compatible SpO2 sensor (IPR SKU SS-165RB-MY10) is a reusable multi-site Y sensor for Masimo SET-equipped monitors that use the RD SET sensor interface. It is a compatible aftermarket replacement, not an OEM Masimo product, built to match the fit, form, and function of the original. The emitter and detector sit on separate flexible leads that split from a single cable in a “Y,” so they can be positioned on opposite sides of a foot, hand, finger, or toe. That makes one sensor usable across patient sizes from neonates to adults. The 3.3 ft (1.0 m) cable ends in an RD SET connector, which attaches to the monitor through an RD SET patient cable. RD SET is not interchangeable with LNCS or M-LNCS connectors without an adapter.

Compatible Monitor Models

This compatible sensor works with Masimo SET-equipped Mindray monitors including the Accutorr 3, Accutorr 7, cPM 8, cPM 12, ePM 10M, and ePM 12M, as well as the Digicare LifeWindow 9X, LifeWindow Lite LW8, and LifeWindow One. Confirm that your device is configured for Masimo RD SET oximetry and that you have the correct RD SET patient cable before ordering.

Design and Construction

The Y design separates the emitter and detector onto two small, flexible heads, so they can be aligned directly across from each other on sites a clip cannot reach, such as a neonate’s foot or palm, an infant’s great toe, or an adult finger. The heads are secured with a wrap suited to the patient and site, following your facility’s application protocol. Because one reusable sensor covers neonatal, pediatric, and adult patients, it simplifies stocking on NICUs, PICUs, and mixed-acuity units running current-generation RD SET monitors. The 3.3 ft (1.0 m) cable terminates in a Masimo RD SET connector. The sensor is reusable and supplied as one set per bag.

When to Replace Your 4054 RD SET Y-I SpO2 Sensor

The thin leads on a Y sensor are the part most exposed to wear, especially where they split from the main cable. Replace the sensor when either lead is cut, kinked, or pulling away at the split, the emitter or detector face is cracked, scratched, or discolored, the RD SET connector is cracked or damaged, or the cable jacket shows cuts. Persistent “sensor off” alarms, low signal quality on a properly applied sensor, or readings that drop out when the cable is moved also point to a failing sensor. If a sensor fails to read on a monitor that passes self-test, try a known-good sensor and patient cable to isolate the fault quickly.

Cross Reference and Interchange Part Numbers

This compatible sensor cross-references to Masimo 4054 (RD SET Y-I) and Draeger MS40070. Aftermarket interchange numbers include Praymed PSF0435-S and Unimed U803-254.

Why Source Masimo-Compatible SpO2 Sensors 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. As facilities move to current-generation monitors with Masimo RD SET technology, compatible reusable sensors give NICUs, pediatric units, and materials managers a cost-effective way to stock them without paying OEM pricing. Our team can confirm fit against your monitor model and RD SET patient cable 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 4054 RD SET Y-I SpO2 Sensor. 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, SET, 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.