A security system and method in which a base unit at a monitored premises such as a residence can, when its alarm is activated by, for example, the detection of an intrusion, fire or other emergency, establish radio communication with similar base units or compatible devices at residences within the same neighborhood and transmit voice and other audio information to alert them of the activation of the alarm.

 
Web www.patentalert.com

< Radio frequency circuit and communication system with power amplifier control

< Apparatus for generating multiple clock signals of different frequency characteristics

> Finding cell phones in rubble and related situations

> Method and system for controlling a robot

~ 00262