RF Exposure

FCC ID: SS3-MM1A1702

RF Exposure Info

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FCCID_3402173

Bay Area Compliance Laboratories Corp. (Chengdu) FCC §15.247 (i) & §1.1310 & §2.1091- MAXIMUM PERMISSIBLE EXPOSURE (MPE) Applicable Standard According to subpart 15.247(i)and subpart §1.1310, systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for Maximum Permissible Exposure (MPE) (§1.1310, §2.1091) (B) Limits for General Population/Uncontrolled Exposure Frequency Range Electric Field Magnetic Field Power Density Averaging Time 2 (MHz) Strength (V/m) Strength (A/m) (mW/cm ) (minutes) 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f²) 30 30–300 27.5 0.073 0.2 30 300–1500 / / f/1500 30 1500–100,000 / / 1.0 30 f = frequency in MHz; * = Plane-wave equivalent power density; According to §1.1310 and §2.1091 RF exposure is calculated. Calculated Formula: Prediction of power density at the distance of the applicable MPE limit S = PG/4πR² = power density (in appropriate units, e.g. mW/cm2); P = power input to the antenna (in appropriate units, e.g., mW); G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain; R = distance to the center of radiation of the antenna (appropriate units, e.g., cm); For simultaneously transmit system, the calculated power density should comply with: Report No.: RDG170226002C Page 11 of 66

Bay Area Compliance Laboratories Corp. (Chengdu) Calculated Data: Tune-up Evaluation Power MPE Frequency Antenna Gain Power Distance Density Limit (MHz) 2 2 (dBi) (numeric) (dBm) (mW) (cm) (mW/cm ) (mW/cm ) 2400- 1.09 1.29 25 316.23 20.00 0.0809 1.0 2483.5 5725-5850 3.57 2.28 23 199.53 20.00 0.0904 1.0 The 2.4GHz and 5GHz band can`t transmit simultaneously: Result: The device meet FCC MPE at 20 cm distance Report No.: RDG170226002C Page 12 of 66


Document Created: 2017-05-08 17:41:24
Document Modified: 2017-05-08 17:41:24
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