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- 125kb
- Update:
- 2012-11-26
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Description: This system is the use of public communications network to the transmission media for the ordinary residents of the telephone recording and automatic alarm system. When the test sent to a phone line ringing (ringing), then no answer after a period of time to simulate the hook, pick up the owner of a message will be sent to the other side, the last entry the other voice, hang up until the completion of testing to each other recording phone functions. When pre-alarm occurs, can automatically dial stored phone numbers or good three mobile phones, pager numbers, the other hook to automatically play the recorded voice alarm message.
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基于AT89S52的汽车报警系统.pdf
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