Abstract: A remotely controllable vehicle system for generating a response to an incoming threat to a secured area and/or control of user selectable convenience features, comprising a wireless transmitter having at least one switch for generating and transmitting a signal encoded with a code word having at least one identification word; a receiver for receiving the signal; a decoder for decoding the code word from the signal; a controller responsive to a command word embedded in the code word only if an identification word, embedded in the code word, is identical to at least one authorized identification word stored in a memory accessible to the controller; a learn mode for programming a new identification word of a new transmitter in the memory as an authorized identification word only if multiple groups of the code words are transmitted from the transmitter and received by the controller.

Abstract: A remote control transmitter comprising at least one transmission channel for transmitting a code word to a system controller and for operating system operational functions controllable thereby; a plurality of transmission channel groups, each group having at least one transmission channel therein; at least one switch for activation of the transmitter, said switch having an operational mode and a standby mode; means for transmitting the code word to the controller and activated upon transition of the switch from the operational mode to the standby mode; and, using the same switch or switches both for selecting the channel group and for transmitting channel commands.

Abstract: A method of indicating a degree of incoming threat to an electronically secured area consists of the steps of sensing via sensor a degree of threat delivered to a secured area and generating an electric signal proportional to the degree of threat; analyzing the signal to determine if it is a low degree of threat or a high degree of threat; and producing either a first pulse representing low degree of threat or separately producing the first pulse and a second pulse representing a signal having both low degree of threat and high degree of threat.