Analysis Report

FCC ID: BJ4-WLTX101

RF Exposure Info

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FCCID_2325188

Analysis Report Report No.: 14041064HKG-001 The equipment under test (EUT) is a transmitter for Remote door bell operating at 315MHz which is operated by a crystal. The EUT is powered by 1 x 3.0V CR2032 battery. The EUT has one control key, press the control key on the EUT in order to control the desired door bell receiver. This manually operated transmitter will automatically deactivate the transmitter within not more than 5 seconds of being released. Antenna Type: Internal integral antenna Antenna Gain: 0dBi Nominal rated field strength: 78.3 dBμV/m at 3m Maximum allowed field strength of production tolerance: +/- 3dB According to the KDB 447498: Based on the Maximum allowed field strength of production tolerance was 81.3 dBμV/m at 3m in frequency 2.4GHz, thus; The EIRP = [(FS*D) ^2*1000 / 30] = 0.040mW Conducted power = Radiated Power (EIRP) – Antenna Gain So; Conducted Power = 0.040mW. The SAR Exclusion Threshold Level: = 3.0 * (min. test separation distance, mm) / sqrt(freq. in GHz) = 3.0 * 5 / sqrt (0.315) mW = 26.73 mW Since the above conducted output power is well below the SAR Exclusion threshold level, so the EUT is considered to comply with SAR requirement without testing.


Document Created: 2014-07-11 11:57:47
Document Modified: 2014-07-11 11:57:47
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