RF exposure evaluation

FCC ID:

RF Exposure Info

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SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD.                                                           FCC ID: 2AUEP-CL-CIN03-05


                                            Maximum Permissible Exposure Report
1. Product Information
   FCC ID                                           2AUEP-CL-CIN03-05
   Product name                                     Smart controller
   Model Number                                     CL-CIN03-05
                                                    Input: DC12-24V, 4A
   Power supply                                     5 Road Output: DC 12-24V, 2A
                                                    (Total output: DC 12-24V, 4A max)
                                                    IEEE 802.11b: DSSS(CCK,DQPSK,DBPSK) for 2.4G WLAN(DTS)
   Modulation Type                                  IEEE 802.11g/n: OFDM(64QAM, 16QAM, QPSK, BPSK) for 2.4G
                                                    WLAN(DTS)
   Antenna Type                                     Internal Antenna for 2.4G WLAN(DTS)
   Antenna Gain                                     2.5 dBi (maximum) for 2.4G WLAN(DTS)
   Hardware version                                 WIFI V1.5 190420
   Software version                                 3.10.1
                                                    IEEE 802.11b:2412-2462MHz
   2.4G WLAN Operation frequency                    IEEE 802.11g:2412-2462MHz
                                                    IEEE 802.11n HT20:2412-2462MHz
   Exposure category                                General population/uncontrolled environment
   EUT Type                                         Production Unit
   Device Type                                      Fixed Equipment

2. Evaluation Method
Systems operating under the provisions of FCC 47 CFR 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.
In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as mobile device whereby
a distance of 0.2m normally can be maintained between the user and the device, and below RF Permissible Exposure
limit shall comply with.

In accordance with KDB447498D01 for Simultaneous transmission MPE test exclusion applies when the sum of the MPE
ratios for all simultaneous transmitting antennas incorporated in a host device, based on the calculated/estimated,
numerically modelled or measured field strengths or power density, is ≤ 1.0. The MPE ratio of each antenna is
determined at the minimum test separation distance required by the operating configurations and exposure conditions
of the host device, according to the ratio of field strengths or power density to MPE limit, at the test frequency. Either
the maximum peak or spatially averaged results from measurements or numerical simulations may be used to
determine the MPE ratios. Spatial averaging does not apply when MPE is estimated using simple calculations based on
far-field plane-wave equivalent conditions. The antenna installation and operating requirements for the host device
must meet the minimum test separation distances required by all antennas, in both standalone and simultaneous
transmission operations, to satisfy compliance.

3. Limit
3. 1 Refer evaluation method

ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic
Fields, 3 kHz to 300 GHz.
FCC KDB publication 447498 D01 General 1 RF Exposure Guidance v06: Mobile and Portable Devices RF Exposure
Procedures and Equipment Authorization Policies.
FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits.
FCC CFR 47 part2 2.1091: Radiofrequency radiation exposure evaluation: mobile devices




    This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd.
                                                                   Page 1 of 3


SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD.                                                           FCC ID: 2AUEP-CL-CIN03-05


3. 2 Limit

                            Limits for Maximum Permissible Exposure (MPE)/Controlled Exposure
                 Frequency            Electric Field     Magnetic Field      Power Density Averaging Time
                Range(MHz)           Strength(V/m)       Strength(A/m)         (mW/cm²)       (minute)
                                          Limits for Occupational/Controlled Exposure
                  0.3 – 3.0                614                1.63               (100) *         6
                  3.0 – 30               1842/f              4.89/f             (900/f2)*        6
                  30 – 300                61.4               0.163                 1.0           6
                 300 – 1500                 /                   /                 f/300          6
               1500 – 100,000               /                   /                   5            6
                           Limits for Maximum Permissible Exposure (MPE)/Uncontrolled Exposure
                 Frequency            Electric Field     Magnetic Field      Power Density Averaging Time
                Range(MHz)           Strength(V/m)       Strength(A/m)         (mW/cm²)       (minute)
                                          Limits for Occupational/Controlled Exposure
                  0.3 – 3.0                614                1.63               (100) *         30
                  3.0 – 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

4. MPE Calculation Method
Predication of MPE limit at a given distance
Equation from page 18 of OET Bulletin 65, Edition 97-01

S=PG/4πR²

Where: S=power density
        P=power input to antenna
        G=power gain of the antenna in the direction of interest relative to an isotropic radiator
        R=distance to the center of radiation of the antenna

5. Antenna Information
CL-CIN03-05 can only use antennas certificated as follows provided by manufacturer;

         Internal              Antenna type and
                                                               Operate frequency band                 Maximum antenna gain
       Identification          antenna number
        Antenna 0              External Antenna                 2412 MHz – 2462 MHz                             2.5dBi

6. Conducted Power
                                                              2.4G WLAN
                                                                 Frequency              Measured Peak Output Power
                    Test Mode                  Channel
                                                                   (MHz)                          (dBm)
                                                  1                 2412                          18.630
                   IEEE 802.11b                   6                 2437                          17.519
                                                  11                2462                          16.023
                                                  1                 2412                          18.628
                   IEEE 802.11g                   6                 2437                          17.999
                                                  11                2462                          16.083
                                                  1                 2412                          18.736
                IEEE 802.11n HT20                 6                 2437                          17.401
                                                  11                2462                          16.287




    This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd.
                                                                   Page 2 of 3


SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD.                                                           FCC ID: 2AUEP-CL-CIN03-05


7. Manufacturing Tolerance
                                                            2.4G WLAN
                                                        IEEE 802.11b (Peak)
                   Channel                     Channel 1               Channel 6                          Channel 11
                Target (dBm)                     18.0                     17.0                               16.0
               Tolerance ±(dB)                    1.0                      1.0                                1.0
                                                        IEEE 802.11g (Peak)
                   Channel                     Channel 1               Channel 6                          Channel 11
                Target (dBm)                     18.0                     18.0                               16.0
               Tolerance ±(dB)                    1.0                      1.0                                1.0
                                                     IEEE 802.11n HT20 (Peak)
                   Channel                     Channel 1               Channel 6                          Channel 11
                Target (dBm)                     18.0                     17.0                               16.0
               Tolerance ±(dB)                    1.0                      1.0                                1.0

8. Measurement Results
8.1 Standalone MPE Evaluation

As declared by the Applicant, the EUT is a wireless device used in a fix application, at least 20 cm from any body part of
the user or nearby persons; from the maximum EUT RF output power, the minimum separation distance, r =20cm, as
well as the gain of the used antenna refer to antenna information, the RF power density can be obtained.

                                    Output power               Antenna         Antenna                                          MPE
                                                                                                Duty          MPE
    Modulation Type                                             Gain             Gain                                           Limits
                                 dBm             mW                                             Cycle       (mW/cm2)
                                                                (dBi)          (linear)                                      (mW/cm2)
      IEEE 802.11b               19.00         79.4328          2.500            1.78           100%          0.0281           1.0000
      IEEE 802.11g               19.00         79.4328          2.500            1.78           100%          0.0281           1.0000
   IEEE 802.11n HT20             19.00         79.4328          2.500            1.78           100%          0.0281           1.0000

Remark:
1. Output power including tune-up tolerance;
2. MPE evaluate distance is 20cm from user manual provide by manufacturer.


8.2 Simultaneous Transmission MPE

The sample support one 2.4G WLAN modular and one antenna, no need consider simultaneous transmission;

9. Conclusion

The measurement results comply with the FCC Limit per 47 CFR 2.1091 for the uncontrolled RF Exposure of mobile
device.



                                  ----------------THE END OF REPORT---------------




    This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd.
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Document Created: 2019-09-09 10:31:11
Document Modified: 2019-09-09 10:31:11

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