Security alarm system

A portable security alarm system consisting of:

• a portable wireless transmitter unit including:
• sensor means for detecting the opening of a door or window in a protected area;
• alarm signal generating means for providing an alarm signal, the alarm signal generating means being controlled by the sensor means;
• mounting means for removably attaching the transmitter unit to a door or window so that the transmitter is portable;
• a portable wireless control unit which provides the exclusive means for arming and disarming the alarm system, the control unit including:
• emergency panic signal generating means including a panic button for providing and transmitting an emergency panic signal;
• arm signal generating means including an arm button for providing and transmitting an arm signal;
• disarm signal generating means including a disarm button for providing and transmitting a disarm signal;
• and
• a portable wireless receiver unit operable stand alone and when connected to an external power source, the receiver unit does not have any control indicators thereon such that the receiver unit can be located in an out-of-the-way or hidden location, the receiver unit including:
• an audible alarm for indicating unauthorized opening of the door or window in the protected area;
• first circuit means for receiving the alarm signal directly from the transmitter unit and activating the alarm when the alarm is armed via a direct electrical connection to the alarm;
• second circuit means for receiving the arm signal from the control unit and arming the alarm;
• third circuit means for receiving the disarm signal from the control unit and disarming the alarm and for turning the alarm off when the alarm is activated;
• and
• fourth circuit means for receiving the emergency panic signal from the control unit and activating the alarm whether or not the alarm is armed.