Spencer 170 NXT is an electronic emergency ventilator for non-invasive ventilation of adult and pediatric patients. It has got special protections against accidental activation of the AIR MIX and ON/OFF selection levers. Color coded manometers allow an easy identification of pressure ranges. The positioning of input and output ports on the side of the device, makes connecting and disconnecting easier and offers greater protection to the elements connected to the device. The placing and the shape of adjustment knobs make the setting of parameters easier in all operative conditions. Control knobs positioned on high contrast background offer a better identification of the set values. The aluminum structure is compact and allows extreme reduction of weights. Spencer 170 NXT operates with a constant I/E ratio and is equipped with alarms for ventilation monitoring and device management. The presence of one ventilation mode makes it simple and easy to operate.