What Is the Compatible Masimo 2644 Red DBI-dc8 SpO2 Sensor?

The Masimo 2644 (Red DBI-dc8) compatible SpO2 sensor (IPR SKU SS-009RB-AS30) is a reusable adult soft tip finger sensor that plugs directly into devices with a 20-pin Masimo Red SpO2 port. It is a compatible aftermarket replacement, not an OEM Masimo product, built to match the 20-pin direct-connect design of the original, so no separate patient cable is needed. The integrated 9.8 ft (3.0 m) cable gives extra reach between the patient and the monitor, which is useful on transport monitors, defibrillators, and bedside setups where the device sits away from the patient.

Compatible Monitor Models

This compatible sensor works with a broad range of Masimo devices with a 20-pin Red port, including the Pronto, Pronto-7, Pronto with Next Generation SpHb, 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, and Radical-7. It is also compatible with the Physio-Control Lifepak 15, Zoll X Series, Comen K12 Pro, Riester RVS 100, and Welch Allyn Connex and Spot vital signs monitors, including the 73MT-B, 74ME-B, 74MX-B, 75ME-B, and 75MT-B. Confirm your device has a 20-pin Masimo Red connector before ordering. Devices with a 14-pin Masimo SET or 9-pin LNCS port need a different sensor.

Design and Construction

The soft tip wraps the finger without the spring pressure of a hard shell clip. This improves comfort during extended monitoring and helps the sensor stay seated when the patient moves. It is sized for adult patients weighing more than 66 lbs (30 kg). The sensor head and the 20-pin Masimo Red connector are joined by one continuous 9.8 ft (3.0 m) cable. With no intermediate patient cable, there is one less connection point that can wear or fail. The sensor is reusable and supplied one per bag.

When to Replace Your Masimo Red Direct-Connect Sensor

Because the sensor and cable on a direct-connect design are a single assembly, damage anywhere along its length means replacing the whole sensor. Replace it when the soft tip material is torn, stretched, or hardened and no longer holds the finger securely, when the emitter or detector windows are scratched or discolored, when the 20-pin connector shows bent pins or a cracked housing, or when the cable jacket is cut, kinked, or pulled away from the strain relief. Recurring “sensor off” or “replace sensor” messages, low signal quality, or readings that drop out when the cable is flexed are also signs the sensor has reached the end of its service life.

Cross Reference and Interchange Part Numbers

This compatible sensor cross-references to Masimo 2644 (Red DBI-dc8), Physio-Control 11171-000053, and Zoll 8000-0377. Aftermarket interchange numbers include Praymed PSC0442-L and Unimed U410S-87. The OEM 2644 uses an 8 ft (2.5 m) cable. This compatible version uses a longer 9.8 ft (3.0 m) cable with the same soft tip sensor, adult sizing, and 20-pin Red connector.

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. Compatible reusable SpO2 sensors are a cost-effective way for hospitals, EMS agencies, and materials managers to keep Masimo Rad-series, Radical-7, Lifepak 15, and Zoll X Series devices in service without paying OEM pricing. Our team can confirm fit against your device before you order. We also offer in-house repair services, replacement parts, and refurbished patient monitoring equipment.

IPR Medical buys, sells, repairs, and stocks parts for the Masimo 2644 Red DBI-dc8 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, 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.