| 摘要 |
An boat alarm system comprising a remote transmitter having a sensor and a transmitter antenna; a land-based station having a station antenna; and whereby said sensor, in response to a condition, triggers the remote transmitter to transmit a first signal via said transmitter antenna, said first signal is received by said land-based station via a station antenna, said land-based station then sends a second signal that calls a predesignated phone number.
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