The Masimo 3858 is a transflectance forehead SpO2 sensor for adult/pediatric (>10 kg) monitoring in low-perfusion or motion-rich environments where finger sensors may struggle. Built on Masimo SET® Measure-through Motion and Low Perfusion™ technology.
Ground & Flight EMSRuggedized for ambulance bags and rotor-wing transport. Standard on paramedic and critical-care transport rigs.
Fire-Based EMSFast setup for first-arriving engines and squad units. Works in strobe-light and sunlight conditions typical of scene work.
Hospital & EDSpot-check and continuous monitoring in emergency departments, ICUs, and procedural areas.
Dental, Clinic & Urgent CareConscious sedation monitoring, pre-op assessment, and general oxygenation checks for outpatient practices.
Frequently Asked Questions
What is the Masimo 3858?
It is a genuine Masimo OEM product — transflectance forehead SpO2 sensor. Pacific Biomedical stocks authentic Masimo product with full manufacturer warranty.
Is this compatible with my Masimo monitor?
Masimo product families (LNCS, M-LNCS, Rainbow, RD SET) are not cross-compatible without adapters. Confirm your monitor's connector type before ordering; our team at CustomerService@pacificbiomedical.com can help you verify compatibility.
Are these genuine Masimo products?
Yes. Pacific Biomedical stocks authentic Masimo OEM product. All items ship new in original Masimo packaging with full manufacturer warranty.
How quickly does this ship?
Most in-stock items ship within 1–2 business days from our warehouse. Expedited and overnight options are available at checkout.
How do I place an order or request a quote?
Email CustomerService@pacificbiomedical.com or call us at (844) 436-3526. We support net terms for agencies and hospitals, and we ship to all 50 states.
