Abstract: A system including at least one sensor capable of indicating the physiological presence an individual proximate thereto, an access control unit associated with the sensor that provides physiological access to a secure area and control circuits coupled to the at least one sensor, and the unit and responsive thereto to adjust a security level and alarm state in a selected region of the secure area.

Abstract: An access control system responds to both a user's access data and information as to the presence of one or more individuals in a region. A determination can be automatically made that an authorized individual, or an unauthorized individual, or, an intruder has been detected. The security level can be adjusted in response to the class of the individual seeking access.

Abstract: A method, apparatus and system for maximizing transmission power levels in wireless security systems wherein the transmitted power is adjusted depending on the type of signal being transmitted in order to comply with power level restrictions imposed by agency regulations (e.g. Federal Communications Commission). Higher priority control signals messages are transmitted at the maximum permitted or normal output power level and are not compromised by the requirement for transmission of data signals that are transmitted at a reduced power level. In addition, a method and apparatus for reducing a required quantity of data signal transmissions in wireless security systems is provided, wherein data signals are exclusively transmitted at a reduced power level during an installation mode leaving only control signals to be transmitted at normal power during normal operation mode.

Abstract: Disclosed are three major aspects relating to wireless transmission of encrypted data messages in a security system wherein the receiver stores locally an encryption key utilized by the transmitting device to encrypt the data message and the receiver uses the encryption key to decrypt an encrypted data message, and wherein a sequence number generator is used to synchronously track the message sequence at both the transmitter and receiver. A first major aspect involves encrypted device registration (learning) methods that are user-friendly and immune from detection by technically skilled intruders with special RF equipment, and periodic user-friendly changing of the encryption key per encrypted transmitting device in the system. A second major aspect involves encrypted device de-registration (unlearning, or deletion) that is likewise user friendly.

Abstract: Disclosed are three major aspects relating to wireless transmission of encrypted data messages in a security system wherein the receiver stores locally an encryption key utilized by the transmitting device to encrypt the data message and the receiver uses the encryption key to decrypt an encrypted data message, and wherein a sequence number generator is used to synchronously track the message sequence at both the transmitter and receiver. A first major aspect involves encrypted device registration (learning) methods that are user-friendly and immune from detection by technically skilled intruders with special RF equipment, and periodic user-friendly changing of the encryption key per encrypted transmitting device in the system. A second major aspect involves encrypted device de-registration (unlearning, or deletion) that is likewise user friendly.

Abstract: A self-testing data communications system suitable for use with an alarm system, the communications system being capable of modifying an operational parameter such as the input signal sensitivity of a receiver located at a monitoring station during receipt of a supervision signal from a remote alarm device, in order to ensure that a non-supervision alarm signal will be properly received when the operational parameter is again returned to its normal state.