Welch Allyn/Hillrom-D-YS Nellcor Dura-Y SpO2 Transducer Kit (Each)Welch Allyn Hillrom D YS Nellcor Dura Y SpO2 Transducer The Welch Nellcor Dura Y SpO2 Transducer includes one sensor and forty wraps. The Welch Nellcor Dura Y SpO2 Transducer is a reusable sensor designed for accurate and reliable oxygen saturation monitoring. It is compatible with the Connex Integrated Wall System, Connex Vital Signs Monitor, Connex Spot Monitor, Propaq CS Monitor, Propaq LT Monitor, Spot Vital Signs Device 4200, Spot Vital Signs LXi