| 摘要 |
System for the remote control of the antitheft protection devices of a property in a semiautomatical way consisting of a transporttable remote control including a transmitter actuated through an encoder, partially programmed during assemblage and partially programmable with hand control during operation, to control the continuous transmission of encoded messages spaced one from the other for a time much higher than the message length, and of a receiving unit composed of a receiver and a decoder-comparator suited to recognize the signals emitted by the transmitter and hence to control automatically connection of the protection devices upon stopping of reception of the scheduled encoded signals, that is for moving away from the property of the person which bears the remote control, and to control only after approaching the property of the person which bears the remote control, and upon a hand control of said remote control encoder, the disconnection of said devices. |
