Description: Returns or changes the Energy Star sleep value. If the value is greater than zero, then the device will go into energy saving sleep mode after the print engine has been idle for the number of seconds specified by this object. A value of zero means Energy Star is disabled and the device will not go to sleep based on print engine idle time. The value must be non-negative. Additional information: Returns or changes the Energy Star sleep value. The device will go into energy saving sleep mode after the print engine has been idle for the number of seconds specified by this object. LaserJet 4550 and LaserJet 4100 supports values of 0, 60, 900, 1800, 3600, 7200, 14400 seconds. A value of 0 means never enter sleep mode based on the print engine idle time. Setting to an unsupported value causes the printer to substitute a value (listed below) and to return status. Setting this value when the printer is in sleep mode will not cause it to wakeup unless it is set to 0. The values are as follow: <=0 snap to 0 >=1 and <= 479 snap to 60 (1 minute) >=480 and <= 1349 snap to 900 (15 minutes) >=1350 and <= 2699 snap to 1800 (30 minutes) >=2700 and <= 5399 snap to 3600 (1 hour) >=5400 and <= 10799 snap to 7200 (2 hours) >=10800 snap to 14400 (4 hours).