Sony PRS-900 User’s Guide (Large File - 13.73 MB) - Page 178

Other Information  The SAR value is determined at the highest certified power level in laboratory conditions, but the actual SAR level of the Reader while it is operating can be well below this value.  This is because the Reader is designed to use the minimum power required to reach the network.  Variation in SAR below the radio frequency exposure guidelines do not mean that there are variations in safety.  While there may be difference in SAR levels among Readers, all Sony Reader models are designed to meet radio frequency exposure guidelines.  The tests are performed in positions and locations as required by FCC for each model.  This Reader model PRS-900 has been designed to comply with applicable safety requirements for exposure to radio waves. These requirements are based on scientific guidelines that include safety margins designed to assure the safety of all persons, regardless of age and health.  The radio wave exposure guidelines employ a unit of measurement known as the Specific Absorption Rate, or SAR. Tests for SAR are conducted using standardized methods with the Reader transmitting at its highest certified power level in all used frequency bands.  SAR data information for residents in countries that have adopted the SAR limit recommended by the ICNIRP, which is 2W/kg averaged over 10g of issue. In other countries, such as the US, the adopted limit is 1.6 W/kg averaged over 1g of issue. Continued 178