After more than a decade of focusing on mechanic ventilation, Spencer provides you with a glimpse of the future with its promise to continue being one of the most reliable and somewhat original producers of portable respiratory emergency ventilators all around the world. Each respirator, electronic or mechanical, from the brand is reliable and takes advantage of innovative technology. This pertains to all respirators, be it old or new. Every product comes from more than a decade of experience and the passion to create the best ventilators. Spencer 118-M is simple, economic, and versatile. It also has total pneumatic supply. It features time-cycled controlled ventilation with pressure limitation and constant square shape flow waves. Control instruments are in place to permit clear and quick reading, and you can find them exactly where you would most likely look for them.