MPE

FCC ID: O5505S2P1

RF Exposure Info

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FCCID_4363143

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: O5505S2P1 Report No.: LCS190614009AE

Maximum Permissible Exposure Report
Product Information
FCC ID: O5505S2P1
Product name WIFI plug
Model number SMART 2 PLUG
Input: 110-220V~ 50/60Hz, 10A/1100W
Power supply
Output:110-220V,10A
IEEE 802.11b: DSSS(CCK,DQPSK,DBPSK)
Modulation Type IEEE 802.11g: OFDM(64QAM, 16QAM, QPSK, BPSK)
IEEE 802.11n HT20: OFDM (64QAM, 16QAM, QPSK,BPSK)
Antenna Type PCB Antenna
Antenna Gain 2.0dBi (Max.)
Hardware version V 1.0
Software version V 1.0
IEEE 802.11b:2412-2462MHz
WLAN FCC Operation frequency IEEE 802.11g:2412-2462MHz
IEEE 802.11n HT20:2412-2462MHz
Extreme temp. Tolerance -20°C to +55°C
Exposure category General population/uncontrolled environment
EUT Type Production Unit
Device Type Stationary Device

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.
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SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: O5505S2P1 Report No.: LCS190614009AE

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
WIFI can only use antennas certificated as follows provided by manufacturer;

Internal Antenna type and
Operate frequency band Maximum antenna gain
Identification antenna number
Multilayer chip
Antenna 2000 MHz – 2500 MHz 2dBi
Antenna

6. Conducted Power
Frequency Measured Peak Output Power
Test Mode Channel
(MHz) (dBm)
1 2412 17.09
IEEE 802.11b 6 2437 14.15
11 2462 13.56
1 2412 16.91
IEEE 802.11g 6 2437 14.09
11 2462 13.32
1 2412 17.16
IEEE 802.11n HT20 6 2437 14.30
11 2462 13.47

This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd.
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SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: O5505S2P1 Report No.: LCS190614009AE

7. Manufacturing Tolerance
2.4GWLAN
IEEE 802.11b (Peak)
Channel Channel 1 Channel 6 Channel 11
Target (dBm) 17.0 14.0 14.0
Tolerance ±(dB) 1.0 1.0 1.0
IEEE 802.11g (Peak)
Channel Channel 1 Channel 6 Channel 11
Target (dBm) 16.0 14.0 13.0
Tolerance ±(dB) 1.0 1.0 1.0
IEEE 802.11n HT20 (Peak)
Channel Channel 1 Channel 6 Channel 11
Target (dBm) 17.0 14.0 13.0
Tolerance ±(dB) 1.0 1.0 1.0

8. Measurement Results
8.1 Standalone MPE

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.

Antenna 0

Output power Antenna Antenna MPE
Duty MPE
Modulation Type Gain Gain Limits
dBm mW Cycle (mW/cm2)
(dBi) (linear) (mW/cm2)
IEEE 802.11b 17.0 50.119 2.00 1.58 100% 0.0498 1.0000
IEEE 802.11g 16.0 39.811 2.00 1.58 100% 0.0358 1.0000
IEEE 802.11n HT20 17.0 50.119 2.00 1.58 100% 0.0451 1.0000

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

8.2 Simultaneous Transmission MPE

The sample only support one 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: 2019-07-18 11:36:14
Document Modified: 2019-07-18 11:36:14

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