MPE

FCC ID: 2AS4YMT-900668

RF Exposure Info

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FCCID_4353170

Zhejiang Kezheng Electronic Product Inspection Building 5, No. 316, Jianghong South Road Binjiang District, Hangzhou 310052, China TEL: +86-571-88366800 Maximum Permissible Exposure Evaluation FCC ID: 2AS4YMT-900668 According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) Radiation as specified in §1.1307(b) EUT Specification EUT Robotic Vacuum Cleaner Frequency band (Operating) WLAN: 2.412GHz ~ 2.462GHz WCDMA Band II, Band IV, Band V LTE FDD Band 2, Band 4, Band 5, Band 12 Others Device category Portable (<20cm separation) Mobile (>20cm separation) Fixed (>20cm separation) Others ___ Exposure classification Occupational/Controlled exposure (S=5mW/cm2) General Population/Uncontrolled exposure (S=1mW/cm2) Antenna diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Max. output power WIFI: 13.38dBm Antenna gain (Max) WIFI: 2dBi Evaluation applied MPE Evaluation SAR Evaluation Zhejiang Kezheng Electronic Product Inspection

Page 2 of 2 Report No.: 2019-9008 Limits for Maximum Permissible Exposure (MPE) Frequency Electric Field Magnetic Field Power Average Range(MHz) Strength(V/m) Strength(A/m) Density(mW/cm2) Time (A) Limits for Occupational/Control Exposures 300-1500 -- -- F/300 6 1500-100000 -- -- 5 6 (B) Limits for General Population/Uncontrol Exposures 300-1500 -- -- F/1500 6 1500-100000 -- -- 1 30 Friis transmission formula: Pd=(Pout*G)\(4*pi*R2) Where Pd= Power density in mW/cm2 Pout=output power to antenna in mW G= gain of antenna in linear scale Pi=3.1416 R= distance between observation point and center of the radiator in cm Pd the limit of MPE 1mW/cm2. If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. Measurement Result Max. Max. Power Power Channel Tune up Antenna Operating Measured Tune up density at density Frequency tolerance Gain Mode Power Power 20cm Limits (MHz) (dBm) (dBi) (dBm) (dBm) (mW/cm2 ) (mW/cm2 ) 802.11b 2437.0 12.20 12.20±1 13.20 2 0.0066 1 802.11g 2437.0 13.38 13.38±1 14.38 2 0.0086 1 802.11n 2462.0 12.36 12.36±1 13.36 2 0.0068 1 (HT20) Note For a more detailed features description, please refer to the RF Test Report. **********************THE END********************** Zhejiang Kezheng Electronic Product Inspection


Document Created: 2019-07-08 13:15:40
Document Modified: 2019-07-08 13:15:40
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