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RF Exposure-MPE FCC

ACOUSTMAX INTERNATIONAL CO., LTD MNRR360 ROCKIN ROLLER 360 2AAIN-MNRR360 2AAINMNRR360 mnrr360

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Document DEVICE REPORTGetApplicationAttachment.html?id=6241480
1. Product Information
EUT Test Model Additional Model No.
Model Declaration
Power Supply
Hardware Version Software Version Bluetooth Frequency Range Channel Number
Channel Spacing
Modulation Type
Bluetooth Version Antenna Description
Exposure category EUT Type Device Type

Page 1 of 4

FCC ID: 2AAIN-MNRR360

Maximum Permissible Exposure Report

: ROCKIN ROLLER 360 : MNRR360 : MNRR360-X, MNRR360-C, MNRR360-EU, MNRR360 Plus,
MNRR360C, MNRR360X, MNRR360XC, MNRR360EU, MNRR360-X Plus, MNRR300, MNRR300-C, MNRR300-X, MNRR360PRO, MNRR360MAX : PCB board, structure and internal of these model(s) are the same, So no additional models were tested : Input: AC 100-240V, 50/60Hz, 100W USB Output: DC 5V, 2.1A Battery: DC 12V, 9Ah :/ :/ : : 2402MHz~2480MHz : 79 channels for Bluetooth V5.0 (DSS) 40 channels for Bluetooth V5.0 (DTS) : 1MHz for Bluetooth V5.0 (DSS) 2MHz for Bluetooth V5.0 (DTS) : GFSK, /4-DQPSK for Bluetooth V5.0 (DSS) GFSK for Bluetooth V5.0 (DTS) : V5.0 : BT Antenna: PCB Antenna, -0.58dBi(Max.) BLE Antenna: PCB Antenna, 3.64dBi(Max.) : General population/uncontrolled environment : Production Unit : Mobile Device

Shenzhen LCS Compliance Testing Laboratory Ltd. Add: 101, 201 Bldg A & 301 Bldg C, Juji Industrial Park Yabianxueziwei, Shajing Street, Baoan District, Shenzhen, 518000, China Tel: +(86) 0755-82591330 | E-mail: [email protected] | Web: www.lcs-cert.com Scan code to check authenticity

Page 2 of 4

FCC ID: 2AAIN-MNRR360

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 C95.1­2019: IEEE Standard for Safety Levels with Respect to Human Exposure to Electric, Magnetic, and Electromagnetic Fields, 0 Hz 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.

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/Uncontrolled 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

Shenzhen LCS Compliance Testing Laboratory Ltd. Add: 101, 201 Bldg A & 301 Bldg C, Juji Industrial Park Yabianxueziwei, Shajing Street, Baoan District, Shenzhen, 518000, China Tel: +(86) 0755-82591330 | E-mail: [email protected] | Web: www.lcs-cert.com Scan code to check authenticity

Page 3 of 4

FCC ID: 2AAIN-MNRR360

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/4R²
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
PCB Antenna can only use antennas certificated as follows provided by manufacturer;

Antenna type and antenna number
PCB Antenna

Operate frequency band
2402MHz ~ 2480MHz

Maximum antenna gain -0.58dBi

Notes BT Antenna

PCB Antenna
6. Conducted Power Mode
GFSK
/4DQPSK

2402MHz ~ 2480MHz

3.64dBi

Channel
0 39 78 0 39 78

[BT]
Frequency (MHz)
2402 2441 2480 2402 2441 2480

BLE Antenna
Peak Conducted Output Power (dBm)
0.63 0.63 0.42 0.28 0.26 0.18

Mode BLE_1M

Channel
0 19 39

[BLE]
Frequency (MHz)
2402 2440 2480

Peak Conducted Output Power (dBm)
0.18 0.07
-0.01

7. Manufacturing Tolerance
Channel Target (dBm) Tolerance ±(dB)
Channel Target (dBm) Tolerance ±(dB)

[BT]

GFSK (Peak)

Channel 0

Channel 39

0

0

1.0

1.0

/4DQPSK (Peak)

Channel 0

Channel 39

0

0

1.0

1.0

Channel 78 0 1.0
Channel 78 0 1.0

Channel Target (dBm) Tolerance ±(dB)

[BLE] BT LE (Peak)

Channel 0

Channel 19

0

0

1.0

1.0

Channel 39 0 1.0

Shenzhen LCS Compliance Testing Laboratory Ltd. Add: 101, 201 Bldg A & 301 Bldg C, Juji Industrial Park Yabianxueziwei, Shajing Street, Baoan District, Shenzhen, 518000, China Tel: +(86) 0755-82591330 | E-mail: [email protected] | Web: www.lcs-cert.com Scan code to check authenticity

Page 4 of 4

FCC ID: 2AAIN-MNRR360

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.

Modulation Type
GFSK /4-DQPSK

Output power

dBm

mW

1.0

1.2589

1.0

1.2589

[BT] Antenna
Gain (dBi) -0.58 -0.58

Antenna Gain (linear)
0.8750 0.8750

MPE (mW/cm2)
0.0002 0.0002

MPE Limits (mW/cm2) 1.0000 1.0000

Modulation Type BT LE

Output power

dBm

mW

1.0

1.2589

[BT LE]
Antenna Gain (dBi)
3.64

Antenna Gain (linear)
2.3121

MPE (mW/cm2)
0.0006

MPE Limits (mW/cm2)
1.0000

Remark: 1. Output power including turn-up tolerance; 2. Output power was adjust to duty cycle at 100% if measured duty cycle less than 98%; 3. MPE evaluate distance is 20cm from user manual provide by manufacturer.
8.2 Simultaneous Transmission MPE Evaluation
The EUT equiped with one BT antenna and one BLE antenna. so need consider simultaneous transmission; According to KDB447498 for Transmitters used in mobile exposure conditions for simultaneous transmission operations; of MPE ratios  1.0

BT MPE ratios
0.0002

Simultaneous Transmission

BLE MPE ratios

 MPE ratios

0.0006

0.0008

Limit 1.0

Results Pass

Remark: 1. Output power including turn-up tolerance; 2. Output power is burst average power; 3. MPE evaluate distance is 20cm from user manual provide by manufacturer; 4. MPE values = PG/4R²
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---------------

Shenzhen LCS Compliance Testing Laboratory Ltd. Add: 101, 201 Bldg A & 301 Bldg C, Juji Industrial Park Yabianxueziwei, Shajing Street, Baoan District, Shenzhen, 518000, China Tel: +(86) 0755-82591330 | E-mail: [email protected] | Web: www.lcs-cert.com Scan code to check authenticity



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