1901RSU031-U4 RF Exposure Report Rev02

FCC ID: PBR-SZG3ACWC

RF Exposure Info

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FCCID_4241941

MRT Technology (Suzhou) Co., Ltd Report No.: 1901RSU031-U4 Phone: +86-512-66308358 Report Version: V02 Web: www.mrt-cert.com Issue Date: 03-27-2019 RF Exposure Evaluation Declaration FCC ID: PBR-SZG3ACWC APPLICANT: The Kroger Co. Application Type: Certification Product: GEN3Z Camera and WiFi_Wave2_Zigbee Access Point Unit Model No.: SRG3ACWC FCC Classification: Digital Transmission System (DTS) Unlicensed National Information Infrastructure (NII) Reviewed By: ( Jame Yuan ) Approved By: ( Robin Wu ) 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: PBR-SZG3ACWC Page Number: 1 of 7

Report No.: 1901RSU031-U4 Revision History Report No. Version Description Issue Date Note 1901RSU031-U4 Rev. 01 Initial Report 01-22-2019 Invalid Revised the product model number 1901RSU031-U4 Rev. 02 03-27-2019 Valid from SZG3ACWC into SRG3ACWC FCC ID: PBR-SZG3ACWC Page Number: 2 of 7

m I Report No.: 1901RSUO31—U4 1. PRODUCT INFORMATION 1.1. Equipment Description Product Name: GEN3Z Camera and WiFi_Wave2_Zigbee Access Point Unit Model No.: SRGBACWC 802.15.4 (Module, FCC ID: PBR—SZMDLNR1) ZigBee Specification: 802.15.4 (Module, FCC ID: PBR—SZMDLM3BR1) Bluetooth Specification: |v5.0 single mode (Module, FCC ID: PBR—SZMDLBTNR1) Wi—Fi 1# Specification: |802.11b/g Wi—Fi 2# Specification: |802.11a/ac Note: MRT test lab provide one POE adapter (Manufacturer: H3C & Model: EWPAM1UPOEZ) for approval testing, it is not for sale. 1.2. Description of Available Antennas Antenna Type Frequency Tx Max Antenna BF Gain CDD Directional Gain (dBi) Band (MHz) Paths Gain (dBi) (dBi) For Power For PSD 2412 ~ 2462 4 2.00 6.02 2.00 8.02 PIFA Antenna 5150 ~ 5850 4 3.00 6.02 3.00 9.02 Note: The EUT supports Cyclic Delay Diversity (CDD) mode, and CDD signals are correlated. For CDD transmissions, directional gain is calculated as follows, Nayt = 4, Nss = 1. If all antennas have the same gain, Gayy, Directional gain = Gayr + Array Gain, where Array Gain is as follows. * For power spectral density (PSD) measurements on all devices, Array Gain = 10 log (Nayt/ Nss) dB = 6.02; * For power measurements on IEEE 802.11 devices, Array Gain = 0 dB for Nayt § 4; FCC ID: PBR—SZG3ACWC Page Number: 3 of 7

Report No.: 1901RSU031-U4 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: PBR-SZG3ACWC Page Number: 4 of 7

Report No.: 1901RSU031-U4 2.2. Test Result of RF Exposure Evaluation Product GEN3Z Camera and WiFi_Wave2_Zigbee Access Point Unit Test Item RF Exposure Evaluation Antenna Gain: Refer to clause 1.2. Test Mode Frequency Band Max Conducted Antenna Gain Maximum EIRP (MHz) Power (dBi) (dBm) (dBm) 802.11b/g 2412 ~ 2462 21.04 2 23.04 5150 ~ 5250 18.72 802.11a/ac 3 23.38 5725 ~ 5825 20.38 One Bluetooth module (FCC ID: PBR-SZMDLBTNR1) Bluetooth 2402 ~ 2480 0.57 2 2.57 One ZigBee module (FCC ID: PBR-SZMDLNR1) 802.15.4 2405 ~ 2480 1.12 2 3.12 Two ZigBee modules (FCC ID: PBR-SZMDLM3BR1) 802.15.4 2405 ~ 2480 19.93 3.27 23.20 Test Mode Frequency Band Maximum EIRP Power Density at Limit (MHz) (dBm) R = 20 cm (mW/cm2) (mW/cm2) 802.11b/g 2412 ~ 2462 23.04 0.0401 1 5150 ~ 5250 802.11a/ac 23.38 0.0433 1 5725 ~ 5825 Bluetooth 2402 ~ 2480 2.57 0.0004 1 802.15.4 2405 ~ 2480 3.12 0.0004 1 802.15.4 2405 ~ 2480 23.20 0.0416 1 CONCLUSION: All of 2.4GHz WLAN, 5GHz WLAN, Bluetooth and ZigBee can transmit simultaneously. The max Power Density at R (20 cm) = 0.0401mW/cm2 + 0.0433mW/cm2 + 0.0004mW/cm2 + 0.0004mW/cm2 + 0.0416mW/cm2 + 0.0416mW/cm2 = 0.1674mW/cm2 < 1mW/cm2. Therefore, the Min Safety Distance is 20cm. The End FCC ID: PBR-SZG3ACWC Page Number: 5 of 7

Report No.: 1901RSU031-U4 Appendix A - Test Setup Photograph Refer to “1901RSU031-UT” file. FCC ID: PBR-SZG3ACWC Page Number: 6 of 7

Report No.: 1901RSU031-U4 Appendix B - EUT Photograph Refer to “1901RSU031-UE” file. FCC ID: PBR-SZG3ACWC Page Number: 7 of 7


Document Created: 2019-04-24 02:31:25
Document Modified: 2019-04-24 02:31:25
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