| 摘要 |
<p>Fire detector (1) comprising a central processing unit (2) and a sensor (3) that supplies said unit with an analog measurement signal. The processor includes a non-volatile memory (2a) containing at least one normal measuring signal value and maintenance dates, the fire detector also comprising an interface (5, 6) for accessing the contents of the non-volatile memory accessible without having to remove the fire detector. After each maintenance, a new maintenance date is recorded in the non-volatile memory. No recording is made, however, if the measuring signal differs substantially from its normal value.</p> |
