| 摘要 |
A warning device able to set speeds of an automobile includes a speed detecting circuit for obtaining the rotating speed signals of an automobile. A speed record processor records the instant speed signals transmitted from the speed detecting circuit. A speed-setting mode contains a high-speed and a low-speed setting key respectively pressed to have the running speed signals stored in the speed record processor when the automobile is running. A release key connected with the speed record processor can be pressed to cancel the preset speed recorded in the speed record processor. A warning device connected with the speed record processor can be actuated to give out a warning signal when the automobile is running at a speed higher or lower than the speed signal preset.
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