Datrend Systems’ vPad-A1, based on our revolutionary Vision-Pad Technology, is an all-in-one patient simulation system. vPad-A1 is modular and is comprised of a Multi-Parameter Patient Simulator, SpO2 test module, and a Non-Invasive Blood Pressure simulation module which may be used together or independently in various combinations, with an Android handheld device or vPad tablet providing the user interface.