| 摘要 |
<p>An electronic narcotic gas detecting device having a gas detecting circuit (3) with a gas sensor (4) for generating an output signal (Vout) related to the presence and/or concentration of at least one narcotic agent; a deriver element (20) receiving the output signal (Vout) and generating a derived signal; and an alarm and signaling signal (7) activated by the gas detecting circuit (3) via the derived signal. <IMAGE></p> |
