Abstract: A micro controller unit including an error indicator hardware module, the error indicator module being arranged to respond to event signals representative of internal and external fault and error events perturbing the micro controller unit function by registering in non-volatile memory a record of the nature of each of the events, wherein the record of the events is inaccessible to alteration.

Abstract: A pressurized gas cylinder holder for a respirator includes a holding part (15) and at least one tightening strap for fastening a pressurized gas cylinder to a holding part (15). Pressurized gas cylinders with different external diameters are able to be fastened to the pressurized gas cylinder holder with an identical longitudinal axis. The holding part (15) has at least two support elements (19) as separate components in addition to the rest of the holding part (15) for supporting the pressurized gas cylinder and at least four fixing devices (20) formed on the holding part (15) for the at least two support elements (19). The support elements (19) may be fastened to different fixing devices (20) for adaptation to pressurized gas cylinders (9) with a different external diameter.

Abstract: A micro controller unit including an error indicator hardware module, the error indicator module being arranged to respond to event signals representative of internal and external fault and error events perturbing the micro controller unit function by registering in non-volatile memory a record of the nature of each of the events, wherein the record of the events is inaccessible to alteration.

Abstract: A micro controller unit including an error indicator hardware module, the error indicator module being arranged to respond to event signals representative of internal and external fault and error events perturbing the micro controller unit function by registering in non-volatile memory a record of the nature of each of the events, wherein the record of the events is inaccessible to alteration.

Abstract: A pressurized gas cylinder holder for a respirator includes a holding part (15) and at least one tightening strap for fastening a pressurized gas cylinder to a holding part (15). Pressurized gas cylinders with different external diameters are able to be fastened to the pressurized gas cylinder holder with an identical longitudinal axis. The holding part (15) has at least two support elements (19) as separate components in addition to the rest of the holding part (15) for supporting the pressurized gas cylinder and at least four fixing devices (20) formed on the holding part (15) for the at least two support elements (19). The support elements (19) may be fastened to different fixing devices (20) for adaptation to pressurized gas cylinders (9) with a different external diameter.

Abstract: A micro controller unit including an error indicator hardware module, the error indicator module being arranged to respond to event signals representative of internal and external fault and error events perturbing the micro controller unit function by registering in non-volatile memory a record of the nature of each of the events, wherein the record of the events is inaccessible to alteration.