1604RSU01604-RF Exposure Report

FCC ID: 2AGN8-Z02HUB

RF Exposure Info

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FCCID_2982691

MRT Technology (Suzhou) Co., Ltd Report No.: 1604RSU01604 Phone: +86-512-66308358 Report Version: V01 Fax: +86-512-66308368 Issue Date: 04-27-2016 Web: www.mrt-cert.com RF Exposure Evaluation Declaration FCC ID: 2AGN8-Z02HUB APPLICANT: Sengled Co., Ltd. Application Type: Certification Product: Element hub Model No.: Z02-hub Trademark: sengled FCC Classification: Digital Transmission System (DTS) Test Date: April 20 ~ 27, 2016 Reviewed By : ( Robin Wu ) Approved By : ( Marlin Chen ) The test results relate only to the samples tested. The test results shown in the test report are traceable to the national/international standards through the calibration of the equipment and evaluated measurement uncertainty herein. The test report shall not be reproduced except in full without the written approval of MRT Technology (Suzhou) Co., Ltd. FCC ID: 2AGN8-Z02HUB Page Number: 1 of 5

Report No.: 1604RSU01604 Revision History Report No. Version Description Issue Date 1604RSU01604 Rev. 01 Initial report 04-27-2016 FCC ID: 2AGN8-Z02HUB Page Number: 2 of 5

Report No.: 1604RSU01604 1. PRODUCT INFORMATION 1.1. Equipment Description Product Name Element hub Model No. Z02-hub Frequency Range 802.15.4: 2405 ~ 2475 MHz 802.11b/g/n-HT20: 2412 ~ 2462MHz 802.11n-HT40: 2422 ~ 2452MHz Type of Modulation 802.15.4: O-QPSK 802.11b: DSSS 802.11g/n: OFDM ZigBee Antenna Gain 2.8dBi Wi-Fi Antenna Gain 3.1dBi FCC ID: 2AGN8-Z02HUB Page Number: 3 of 5

Report No.: 1604RSU01604 2. RF Exposure Evaluation 2.1. Limits According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in 1.1307(b) LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) Frequency Range Electric Field Magnetic Field Power Density Average Time 2 (MHz) Strength (V/m) Strength (A/m) (mW/cm ) (Minutes) (A) Limits for Occupational/ Control Exposures 300-1500 -- -- f/300 6 1500-100,000 -- -- 5 6 (B) Limits for General Population/ Uncontrolled Exposures 300-1500 -- -- f/1500 6 1500-100,000 -- -- 1 30 f= Frequency in MHz Calculation Formula: Pd = (Pout*G)/(4*pi*r2) Where Pd = power density in mW/cm2 Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 r = distance between observation point and center of the radiator in cm Pd is the limit of MPE, 1mW/cm². If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. FCC ID: 2AGN8-Z02HUB Page Number: 4 of 5

Report No.: 1604RSU01604 2.2. Test Result of RF Exposure Evaluation Product Element hub Test Item RF Exposure Evaluation Test Mode Frequency Band Maximum Average Power Density at Limit (MHz) Output Power R = 20 cm (mW/cm2) (dBm) (mW/cm2) 802.15.4 2405 ~ 2475 17.86 0.0232 1 802.11b/g/n 2412 ~ 2462 13.28 0.0086 1 CONCULISON: Both of the 2.4GHz ZigBee and 2.4GHz WLAN can transmit simultaneously. Therefore, the Max Power Density at R (20 cm) = 0.0232mW/cm2 + 0.0086mW/cm2 = 0.0318mW/cm2 < 1mW/cm2. So the EUT complies with the requirement. The End FCC ID: 2AGN8-Z02HUB Page Number: 5 of 5


Document Created: 2017-12-04 15:03:17
Document Modified: 2017-12-04 15:03:17
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