This compatible sensor connects directly to the bedside monitor. It works with the following patient monitors: Philips: C1, C3, M3, M4, MP20, MP30, MP40, MP50, MP60, MP70, MP80, MP90, VM4, VM6, VM8, HP Viridia 24C, Philips Heartstart defibrillator and IntelliVue; Goldway G40;