| 摘要 |
An alarm system is provided including a plurality of remote units each having a fire or burglar alarm for generating an activation signal. A transmitter is situated within the housing for transmitting a signal via free space upon the receipt of the activation signal. Next provided is a central dispatch station including a radio receiver for receiving the signal from the transmitter of at least one of the remote units for dispatching emergency personnel to the at least one of the remote units.
|
