| 摘要 |
<p>A wireless, boundless and omnidirectional roboticized theftproof and start-up apparatus, particularly a vehicle annunciator, comprising of a device A and a device B, wherein the device A is built on visable surface of the vehicle, and the device B is built in a shelter in vehicle or vehicle exterior; the device A is capable of picking up the alarm signals and transmitting to the device B, the device B is capable of receiving the signals from the device A and transmitting an alarm out. When the device A is cut off or destroyed, it transmits an signal immediately, and the device B starts to give an alarm continually, because the device B is in a shelter and not easy to be found, so the annunciator can not be destroyed.</p> |
