The ONYX 45 Respirator Blower attaches to a wide range of protective respirators via a rubber hose. The blower incorporates a versatile air-flow system that integrates with all protective respirators. The blower transforms all NBC masks into overpressure masks. The purpose of the ONYX 45 Respirator Blower is to create overpressure within the interior of the mask, in order to prevent the entry of chemical and biological warfare agents. The ONYX 45 makes it easy to breathe and enhances the comfort of using a standard rubber mask. The ONYX 45 supplies approx. 45 liters of air per minute and is powered by four lithium batteries (size 2/3A) that offer at least 20 hours of operation. The ONYX 45 can also be powered by enhanced batteries that offer at least 72 hours of operation. The blower is equipped with a monitor lamp, so that users can verify proper operation at all times. The ONYX 45 can be clipped to users’ clothing without limiting freedom of motion. Simple to operate, the blower ensures correct use under all conditions.