The device must be designed and made so that, as long as it is used within the period the manufacturer says it can be safely used, is not exposed to stresses beyond those of normal use, and is maintained and calibrated as the manufacturer instructs, the characteristics and performance demanded by clauses 1 to 3 do not deteriorate. This calls for a defined service life or shelf life backed by ageing, durability and reliability data.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.