*Crimes and time display by LCD
*Intelligent learning codes to facilitate increase and decrease configuration
*Long-distance alarm site monitoring and calling by telephone
*Automatic dialing stored phone numbers
*High-loudness speaker alarming on site
*Guard arrangement, evacuation, muting and
*Emergency call controlled by telephone, to achieve
*Automatic sound recording
*Long-distance host control by telephone, to achieve
*Automatic AC/DC switching
*Police center is accessible through network