tzmon(7d)							      Devices								 tzmon(7d)

NAME

       tzmon - ACPI Thermal Zone Monitor

DESCRIPTION

       The  tzmon  is a pseudo driver that serves as an ACPI thermal zone monitor. Thermal zones are logical regions  within a computer system for
       which ACPI performs temperature monitoring and control functions. The number of thermal zones on a system with  ACPI  support  varies.  For
       example,  some  systems	may have one or more thermal zones, while others may have none. See the Advanced Configuration and Power Interface
       Specification, (ACPI) Version 3.0A. for more details.

       The tzmon handles thermal Zone events from ACPI and polls the temperature for each zone exposed	by the ACPI implementation.  If  threshold
       temperatures are reached, tzmon takes appropriate action.  For example, if the temperature is sufficiently high and the ACPI implementation
       supports it, tzmon initiates system shutdown.

       Note that by default,  system temperature control functions are usually performed by the BIOS and may supersede tzmon functions,  depending
       on the BIOS implementation. Also, many ACPI implementations expose no thermal zones and in these cases, tzmon performs no functions.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWckr			   |
       +-----------------------------+-----------------------------+
       |Architecture		     |x86/x64 only		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Private			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

       Advanced Configuration and Power Interface Specification, (ACPI), Version 3.0A.

SunOS 5.11							    31 Oct 2006 							 tzmon(7d)