This command is activated by the "A" key. If the alarm mode is off when you give this command, then alarm mode will be turned on. If the alarm mode is enabled then giving this command will disable the alarm mode. When you issue the command the computer will tell you whether you have enabled or disabled the alarm. The alarm mode allows the MicronEye to function as a surveillance device. The light margin setting determines the sensitivity of the alarm. The greater the light margin setting, the less sensitive the MicronEye will be to change. The alarm is activated by changes in light level. If an object moves across the camera's field of view, an alarm will sound until a key is struck on the Apple's keyboard. A user can also customize the computer's response to the alarm being tripped. The computer could automatically dial a phone number, activate recording equipment, etc.