This document presents an RF exposure evaluation for a device with FCC ID 2BB7B-AT15, conducted in accordance with 447498 D01 General RF Exposure Guidance v06. The evaluation focuses on determining SAR (Specific Absorption Rate) test exclusion thresholds for frequencies between 100 MHz and 6 GHz, with test separation distances of ≤ 50 mm.
The methodology involves calculating a value based on the maximum power of the channel (including tune-up tolerance), the minimum test separation distance, and the RF channel transmit frequency. This value is then compared against thresholds of 3.0 for 1-g SAR and 7.5 for 10-g extremity SAR.
The results indicate that for both 2.4G Wi-Fi and BLE modes, the calculated thresholds are below the 3.0 limit, suggesting that a SAR test is not required. Furthermore, the document considers the scenario where BLE and 2.4G Wi-Fi transmit simultaneously, and the combined threshold remains below 1, reinforcing the conclusion that a SAR test is unnecessary.