MPE report

FCC ID: YZP-REBETZ37E

RF Exposure Info

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FCCID_4088087

Page 1 of 7 Report No. : OT-18N-RWD-041 ELECTROMAGNETIC EMISSION COMPLIANCE REPORT FOR LOW-POWER, NON-LICENSED TRANSMITTER Test Report No. : OT-18N-RWD-041 AGR No. : A188A-213 Applicant : LG Innotek Co., Ltd. Address : 26, Hanamsandan 5beon-ro Gwangsan-gu, 506-731, Gwangju, South Korea Manufacturer : LG Innotek Co., Ltd. Address : 26, Hanamsandan 5beon-ro Gwangsan-gu, 506-731, Gwangju, South Korea Type of Equipment : Electronic Shelf Label FCC ID. : YZP-REBETZ37E Model Name : REBE-TZ37E Multiple Model Name : REBE-TZ37F Serial number : N/A Total page of Report : 7 pages (including this page) Date of Incoming : November 20, 2018 Date of issue : November 27, 2018 SUMMARY The equipment complies with the regulation; FCC PART 15 SUBPART C Section 15.247 This test report only contains the result of a single test of the sample supplied for the examination. It is not a generally valid assessment of the features of the respective products of the mass-production. Reviewed by: Approved by: Ki-Hong, Nam / Chief Engineer Keun-Young, Choi / Vice President ONETECH Corp. ONETECH Corp. It should not be reproduced except in full, without the written approval of ONETECH Corp. EMC-003 (Rev.2) ONETECH Corp.: 43-14, Jinsaegol-gil, Chowol-eup, Gwangju-si, Gyeonggi-do, 12735, Korea (TEL: 82-31-799-9500, FAX: 82-31-799-9599)

oneETECH Ns Page 2 of 7 Report No. : OT—18N—RWD—041 CONTENTS PAGE 1. VERIFICATION OF COMPLIANCE 4 2. GENERAL INFORMATION 5 2.1 PRODUCT DESCRIPTION::. 2222000000000 00000000 n000 en e enn en en en en en en narenne en en en anenennennennenarennennennennenne en en nnnn ns nnennennennennenennennea 5 2.2 ALTERNATIVE TYPE(S)/MODEL(S); ALSO COVERED BY THIS TEST REPORT.................00.000000000000000en0eneenmenmenmensemnmenees 5 3. EUT MODIFICATIONS 5 4. MAXIMUM PERMISSIBLE EXPOSURE 6 4.1 RF EXPOSURE CALCULATION 12. 22.0. 0000000000000 00en0en0ennenne en en en narennr en en en en nnne en en narenne en en en en en en en nnsennennenneeneennennennenne 6 4.2 EUT DESCRIPTION:..2.22.000.00.00000000 00000 n0n0ennene en en en en en en en en en n en en en nnenennennenare ennnennennenne en en nne en nnrenennnennenneennennennenne 6 4.3 CALCULATED MPE SAFE DISTANCE:::.00.00.000.00000000000000n0en0ernrnrenr en en en en nnnr en en enennneene en en en en en en en enennnennenneennennennenne 7 It should not be reproduced except in full, without the written approval of ONETECH Corp. EMC—003 (Rev.2) ONETECH Corp.: 43—14, Jinsaegol—gil, Chowol—eup, Gwangiu—si, Gyeonggi—do, 12735, Korea (TEL: 82—31—799—9500, FAX: 82—31—799—9599)

Page 3 of 7 Report No. : OT-18N-RWD-041 Revision History Rev. No. Issue Report No. Issued Date Revisions Section Affected 0 OT-18N-RWD-041 2018.11.27 Initial Release All It should not be reproduced except in full, without the written approval of ONETECH Corp. EMC-003 (Rev.2) ONETECH Corp.: 43-14, Jinsaegol-gil, Chowol-eup, Gwangju-si, Gyeonggi-do, 12735, Korea (TEL: 82-31-799-9500, FAX: 82-31-799-9599)

Page 4 of 7 Report No. : OT-18N-RWD-041 1. VERIFICATION OF COMPLIANCE Applicant : LG Innotek Co., Ltd. Address : 26, Hanamsandan 5beon-ro Gwangsan-gu, 506-731, Gwangju, South Korea Contact Person : Jeong, Inchang / Director Telephone No. : +86-62-950-0332 FCC ID : YZP-REBETZ37E Model Name : REBE-TZ37E Serial Number : N/A Date : November 27, 2018 EQUIPMENT CLASS DTS – DIGITAL TRNSMISSION SYSTEM E.U.T. DESCRIPTION Electronic Shelf Label THIS REPORT CONCERNS Original Grant MEASUREMENT PROCEDURES ANSI C63.10: 2013 TYPE OF EQUIPMENT TESTED Pre-Production KIND OF EQUIPMENT Certification AUTHORIZATION REQUESTED EQUIPMENT WILL BE OPERATED FCC PART 15 SUBPART C Section 15.247 UNDER FCC RULES PART(S) Modifications on the Equipment to Achieve None Compliance Final Test was Conducted On 3 m, Semi Anechoic Chamber -. The above equipment was tested by ONETECH Corp. for compliance with the requirement set forth in the FCC Rules and Regulations. This said equipment in the configuration described in this report, shows the maximum emission levels emanating from equipment are within the compliance requirements. It should not be reproduced except in full, without the written approval of ONETECH Corp. EMC-003 (Rev.2) ONETECH Corp.: 43-14, Jinsaegol-gil, Chowol-eup, Gwangju-si, Gyeonggi-do, 12735, Korea (TEL: 82-31-799-9500, FAX: 82-31-799-9599)

Page 5 of 7 Report No. : OT-18N-RWD-041 2. GENERAL INFORMATION 2.1 Product Description The LG Innotek Co., Ltd., Model REBE-TZ37E (referred to as the EUT in this report) is a Electronic Shelf Label. The product specification described herein was obtained from product data sheet or user’s manual. Device Type Electronic Shelf Label Temperature Range +10 °C ~ +30 °C Operating Frequency 2 405 MHz ~ 2 480 MHz RF Output Power 7.53 dBm Number of Channel 16 Channel Modulation Type O-QPSK Antenna Type PCB Antenna Antenna 0: 0.79 dBi Antenna Gain Antenna 1: -0.54 dBi List of each Osc. or crystal 32 MHz, 32.768 kHz Freq.(Freq. >= 1 MHz) RATED SUPPLY VOLTAGE DC 3.0 V 2.2 Alternative type(s)/model(s); also covered by this test report. -. The following lists consist of the added model and their differences. Model Name Differences Tested REBE-TZ37E Basic Model.  REBE-TZ37F These models are identical to basic model except for the Back cover hook.  Note: 1. Applicant consigns only basic model to test. Therefore this test report just guarantees the units, which have been tested. 2. The Applicant/manufacturer is responsible for the compliance of all variants. 3. EUT MODIFICATIONS -. None It should not be reproduced except in full, without the written approval of ONETECH Corp. EMC-003 (Rev.2) ONETECH Corp.: 43-14, Jinsaegol-gil, Chowol-eup, Gwangju-si, Gyeonggi-do, 12735, Korea (TEL: 82-31-799-9500, FAX: 82-31-799-9599)

Page 6 of 7 Report No. : OT-18N-RWD-041 4. MAXIMUM PERMISSIBLE EXPOSURE 4.1 RF Exposure Calculation According to the FCC rule 1.1310 table 1B, the limit for the maximum permissible RF exposure for an uncontrolled environment are f/1500 mW/cm² for the frequency range between 300 MHz and 1 500 MHz and 1.0 mW/cm² for the frequency range between 1 500 MHz and 100 000 MHz. The electric field generated for a 1 mW/cm² exposure is calculated as follows: E = √ (30 * P * G) / d, and S = E² / Z = E² / 377, because 1 mW/cm² = 10 W/m² Where S = Power density in mW/cm², Z = Impedance of free space, 377 Ω E = Electric filed strength in V/m, G = Numeric antenna gain, and d = distance in meter Combing equations and rearranging the terms to express the distance as a function of the remaining variable d = √ (30 * P * G) / (377 *10 S) Changing to units of mW and cm, using P (mW) = P (W) / 1 000, d (cm) = 0.01 * d (m) d = 0.282 * √ (P * G) / S Where d = distance in cm, P = Power in mW, G = Numeric antenna gain, and S = Power density in mW/cm² 4.2 EUT Description Kind of EUT Electronic Shelf Label □ Wireless Microphone: 494.000 MHz ~ 501.000 MHz and 498.200 MHz ~ 505.200 MHz □ WLAN: 2 412 MHz ~ 2 462 MHz Operating Frequency Band □ WLAN: 5 180 MHz ~ 5 320 MHz / 5 500 MHz ~ 5 700 MHz □ WLAN: 5 745 MHz ~ 5 825 MHz □ Bluetooth: 2 402 MHz ~ 2 480 MHz ■ Zigbee: 2 405 MHz ~ 2 480 MHz □ Portable (< 20 cm separation) Device Category □ Mobile (> 20 cm separation) ■ Others Max. Output Power 7.53 dBm Used Antenna PCB Antenna Antenna 0: 0.79 dBi Used Antenna Gain Antenna 1: -0.54 dBi ■ MPE Exposure Evaluation Applied □ SAR □ N/A It should not be reproduced except in full, without the written approval of ONETECH Corp. EMC-003 (Rev.2) ONETECH Corp.: 43-14, Jinsaegol-gil, Chowol-eup, Gwangju-si, Gyeonggi-do, 12735, Korea (TEL: 82-31-799-9500, FAX: 82-31-799-9599)

onETECH Nh Page 7 of 7 Report No. : OT—18N—RWD—041 4.3 Calculated MPE Safe Distance According to above equation, the following result was obtained. Power Target Power Max tune up . Operating Antenna Gain Safe Density Limit W/itolerance power Freq. Band Operating Mode Distance (mW/cm?) (mW/ (MHz) (cm) @ 20 cm cm) (dBm) (dBm) (mW) Log Linear Separation 2405 Zigbee 7.50 + 0.5 8.00 6.31 0.79 1.20 0.78 0.001 5 1.00 ~2 480 According to above table, for 2 405 MHz ~ 2 480 MHz Band, safe distance, D=0.282 * ~ (6.31 * 1.20/1.00 =0.78 cm For getting power density at 20 cm separation in above table, following formula was used. S =P * G / (4r * R2) = 6.31 * 0.79 / (4 * 3.14 * 20A2) = 0.001 5 Where: S = Power Density, P = Power input to the external antenna (Output power from the EUT antenna port (dBm) — cable loss (dB)), G = Gain of Transmit Antenna (linear gain), R = Distance from Transmitting Antenna f Tested by: Hyung—Kwon, Oh / Assistant Manager It should not be reproduced except in full, without the written approval of ONETECH Corp. EMC—003 (Rev.2) ONETECH Corp.: 43—14, Jinsaegol—gil, Chowol—eup, Gwangju—si, Gyeonggi—do, 12735, Korea (TEL: 82—31—799—9500, FAX: 82—31—799—9599)


Document Created: 2018-11-27 10:36:40
Document Modified: 2018-11-27 10:36:40
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