RF Exposure Info

FCC ID: 2AC23-WT54

RF Exposure Info

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FCCID_4439771

FCC RF EXPOSURE REPORT For WIFI+BT Module MODEL NUMBER: WT54M2000 FCC ID: 2AC23-WT54 REPORT NUMBER: 4788989204-4 ISSUE DATE: June 20, 2019 Prepared for Hui Zhou Gaoshengda Technology Co.,LTD NO.75 Zhongkai Development Area Huizhou, Guangdong China Prepared by UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch Building 10, Innovation Technology Park, No. 1, Li Bin Road, Song Shan Lake Hi-Tech Development Zone, Dongguan, People’s Republic of China Tel: +86 769-22038881 Fax: +86 769 33244054 Website: www.ul.com The results reported herein have been performed in accordance with the laboratory’s terms of accreditation. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report apply to the test sample(s) mentioned above at the time of the testing period only and are not to be used to indicate applicability to other similar products. This report does not imply that the product(s) has met the criteria for certification.

REPORT No.: 4788989204-4 Page 2 of 6 TABLE OF CONTENTS 1. ATTESTATION OF TEST RESULTS .................................................................................... 3 2. TEST METHODOLOGY ........................................................................................................ 3 3. FACILITIES AND ACCREDITATION .................................................................................... 4 4. REQUIREMENT .................................................................................................................... 5 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch.

REPORT No.: 4788989204-4 Page 3 of 6 1. ATTESTATION OF TEST RESULTS Applicant Information Company Name: Hui Zhou Gaoshengda Technology Co.,LTD Address: NO.75 Zhongkai Development Area Huizhou, Guangdong China Manufacturer Information Company Name: Hui Zhou Gaoshengda Technology Co.,LTD Address: NO.75 Zhongkai Development Area Huizhou, Guangdong China EUT Information EUT Name: WIFI+BT Module Model: WT54M2000 Sample Status: Normal Brand Name: GSD Sample Received Date: April 28, 2019 Date of Tested: April 29 ~ June 17, 2019 APPLICABLE STANDARDS STANDARD TEST RESULTS FCC 47CFR§2.1091 Complies KDB-447498 D01 V06 Prepared By: Checked By: Kebo Zhang Shawn Wen Engineer Project Associate Laboratory Leader Approved By: Stephen Guo Laboratory Manager UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch.

REPORT No.: 4788989204-4 Page 4 of 6 2. TEST METHODOLOGY The tests documented in this report were performed in accordance with KDB 447498 D01 General RF Exposure Guidance v06. 3. FACILITIES AND ACCREDITATION A2LA (Certificate No.: 4102.01) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. has been assessed and proved to be in compliance with A2LA. FCC (FCC Designation No.: CN1187) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. Has been recognized to perform compliance testing on equipment subject to the Commission's Delcaration of Conformity (DoC) and Certification rules ISED(Company No.: 21320) Accreditation UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. Certificate has been registered and fully described in a report filed with Industry Canada. The Company Number is 21320. VCCI (Registration No.: G-20019, R-20004, C-20012 and T-20011) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. has been assessed and proved to be in compliance with VCCI, the Membership No. is 3793. Facility Name: Chamber D, the VCCI registration No. is G-20019 and R-20004 Shielding Room B , the VCCI registration No. is C-20012 and T-20011 Note 1: All tests measurement facilities use to collect the measurement data are located at Building 10, Innovation Technology Park, Song Shan Lake Hi tech Development Zone, Dongguan, 523808, China Note 2: The test anechoic chamber in UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch had been calibrated and compared to the open field sites and the test anechoic chamber is shown to be equivalent to or worst case from the open field site. Note 3: For below 30MHz, lab had performed measurements at test anechoic chamber and comparing to measurements obtained on an open field site. And these measurements below 30MHz had been correlated to measurements performed on an OFS. UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch.

REPORT No.: 4788989204-4 Page 5 of 6 4. REQUIREMENT LIMIT Limits for General Population/Uncontrolled Exposure Limits for General Population/Uncontrolled Exposure Electric Field Magnetic Field Power Averaging Time Frequency Range 2 2 Strength (E) Strength (H) Density (S) |E| , |H| or S (MHz) 2 (V/m) (A/m) (mW/cm ) (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 30 300-1500 -- -- f/150 30 1500-100,000 -- -- 1.0 30 Note 1: f = frequency in MHz, * means Plane-wave equivalent power density Note 2: General population/uncontrolled exposures apply in situations in which the general public may be exposed, or in which persons that are exposed as a consequence of their employment may not be fully aware of the potential for exposure or cannot exercise control over their exposure. Note 3: The limit value 1.0mW/cm2 is available for this EUT. MPE CALCULATION METHOD 2 S =PG/(4πR ) where: S = 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 R = distance to the center of radiation of the antenna (appropriate units, e.g., cm) UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch.

REPORT No.: 4788989204-4 Page 6 of 6 CALCULATED RESULTS Radio Frequency Radiation Exposure Evaluation BLE (Worst case) Operating Max. Tune up Power Antenna Gain Power density Limit Mode (dBm) (dBi) (num) (mW/ cm2 ) BLE 4 4.74 2.98 0.00149 1 BT (Worst case) Operating Max. Tune up Power Antenna Gain Power density Limit Mode (dBm) (dBi) (num) (mW/ cm2 ) BT 5 4.74 2.98 0.00187 1 WIFI 2.4G (Worst case) Operating Max. Tune up Power Directional Gain Power density Limit Mode (dBm) (dBi) (num) (mW/ cm2 ) 802.11n 16 7.75 5.96 0.0472 1 HT20 Note: the calculated distance is 20cm. BT+WIFI 2.4GHz=0.00187+0.0472=0.0491(mW/ cm2 ) Therefor the maximum calculations of above situations are less than the “1” limit. END OF REPORT UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch.


Document Created: 2019-09-09 15:24:42
Document Modified: 2019-09-09 15:24:42
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