| 摘要 |
<p>An alarm method and an alarm thereof, wherein the alarm comprises a casing body (5), a panel (3), a protective cover (1), functional keys (2) and a circuit board (4), wherein a detection alarm test circuit is arranged on the circuit board (4) and is connected with the functional keys (2), and said the detection alarm testing circuit comprises a power supply, a rectification and voltage regulator circuit, a main control chip, a magnetron, a power amplifier circuit, a loud speaker, an alarm LED circuit and an setting LED circuit; the power supply is connected with the main control chip through the rectification and voltage regulator circuit; the main control chip is also respectively connected with the magnetron, the alarm LED circuit and the setting LED circuit and is connected with the load speaker through the power amplifier circuit; and the magnetron is controlled by the magnetic force of a corresponding magnetic paste to realize a switch-off or switch-on state.</p> |
