MPE Report

FCC ID: 2ABEU-MJDP01YL

RF Exposure Info

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FCCID_3917571

Report No: 68.940.18.0016.01A


                                     MPE Calculation

 Applicant:         Qingdao Yeelink Information Technology Co., Ltd.
 Address:           F10-B4, Bldg.B, International Innovation Park, 1# Keyuanweiyi Rd., Laoshan,
                    Qingdao, Shandong Province, PEOPLE'S REPUBLIC OF CHINA
 Product:           Mi LED Smart Bulb (White and Color)
 FCC ID:            2ABEU-MJDP01YL
 Model No.:         MJDP01YL
 Reference
                    68.940.18.0016.01A
 RF report #

 According to subpart 15.247(i)and subpart §1.1307(b)(1), 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
(MHz)                     Strength (V/m)              Strength (A/m)                (mW/cm2)                      (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

300–1,500                 /                           /                             f/1500                        30

1,500–100,000             /                           /                             1.0                           30
 f = frequency in MHz; * = Plane-wave equivalent power density;

 According to §1.1310 and §2.1091 RF exposure is calculated.

 Calculated Formulary:
 Predication of MPE limit at a given distance
 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);

 Calculated Data:




                                   TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch
              Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City,
                                   518052, P. R. China Tel. +86 755 8828 6998, Fax: +86 755 8828 5299


Report No: 68.940.18.0016.01A


 For Robotic Vacuum Cleaner
    Maximum Average output power at antenna input terminal (dBm):                                              17.3

    Maximum peak output power at antenna input terminal (mW):                                                  53.7

    Prediction distance (cm):                                                                                  20
    Antenna Gain, typical (dBi):                                                                               3
    Maximum Antenna Gain (numeric):                                                                            1.995

    The worst case is power density at predication frequency at 20 cm (mW/cm2):                                0.0213

    MPE limit for general population exposure at prediction frequency (mW/cm2):                                1.0



 0.0213(mW/cm2) < 1 (mW/cm2)


 Result: Compliant

 TUV SUD China, Shenzhen Branch


 Reviewed by:                                                                     Prepared by:




 Laurent Yuan/EMC Project Manager                                                Dawi Xu/EMC Project Engineer
 Date: 2018-06-28                                                                             Date:2018-06-28




                                TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch
           Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City,
                                518052, P. R. China Tel. +86 755 8828 6998, Fax: +86 755 8828 5299



Document Created: 2018-07-03 09:58:36
Document Modified: 2018-07-03 09:58:36

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