MPE Report

FCC ID: 2AB2QLZW30

RF Exposure Info

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FCCID_4403205

Report No: 68.912.19.0013.01A


                                     MPE Calculation

 Applicant:         LEEDARSON LIGHTING CO., LTD
 Address:           Xingda Road, Xingtai Industrial Zone, Changtai County, Zhangzhou, Fujian, China
 Product:           On/Off Switch
 FCC ID:            2AB2QLZW30
 Model No.:         LZW30
 Reference
                    68.912.19.0013.01
 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 ANSI C63.10-2013 (9.5 Equations to calculate EIRP),




                                   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: 68.912.19.0013.01A


  Field Strength (EMeas):                                                                                    93.54 (dBuV/m)
                                                                                                             (f=0.908GHz)
  Measurement Distance(dMeas):                                                                               3 (m)

  Equivalent Isotropically Radiated Power(EIRP):                                                             0.68 (mW)



 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:


 Maximum peak output power at antenna input terminal (mW):                                                 0.68
 Prediction distance (cm):                                                                                 20
 Antenna Gain, typical (dBi):                                                                              -1.8

 Maximum Antenna Gain (numeric):                                                                           0.66

 The worst case is power density at predication frequency at 20 cm (mW/cm2):                               0.000089

 MPE limit for general population exposure at prediction frequency (mW/cm2):                               0.6056


 0.000089 (mW/cm2) < 0.6056 (mW/cm2)


 Result: Compliant



TUV SUD China, Shenzhen Branch

Reviewed by:                                                                    Prepared By:




Laurent Yuan/ EMC Project Manager                                            Henry Chen/EMC Project Engineer

Date: 2019-08-08                                                             Date: 2019-08-08



                                 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: 2019-08-19 14:09:36
Document Modified: 2019-08-19 14:09:36

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