A non-sterile device designed to provide or assist ventilation in a patient who is apnoeic or exhibits inadequate respiration through automatic pneumatic-driven pressure cycle functions. It is connected to a source of compressed oxygen (O2) and, if not entrained, medical air via oxygen/air terminal units or gas cylinder(s). It typically includes gas supply tubing, a gas control modulator, gas connector(s), safety valves, and a flex connector to connect to a face mask or endotracheal (ET) tube. It is used in ambulances, intensive care units (ICU), during internal patient transfer, accident and emergency (A&E), and mass casualty incidents (MCI). This is a single-use device.