This document presents the Radio Frequency (RF) exposure evaluation for a device with FCC ID 2A58S-2990, conducted by Shenzhen Tongzhou Testing Co.,Ltd. The evaluation adheres to section B.4 of the 447498 D04 Interim General RF Exposure Guidance v01, focusing on SAR-based thresholds derived from frequency, power, and separation distance. The report details the formulas used to determine these thresholds, considering both available maximum time-averaged power and maximum time-averaged ERP.
The evaluation includes measurements of conducted power at various frequencies (2405 MHz, 2445 MHz, and 2475 MHz) and assesses compliance with SAR exemption limits. The maximum ERP is used for Routine Evaluation Exemption according to B.4 of 447498 D04 Interim General RF Exposure Guidance v01. The results indicate that the device meets the required thresholds, and therefore, SAR evaluation is not required.