2A86H-DF-580Emergency Radio

FCC ID LABEL: Ca. 20mm x 20mm Label Location FCC ID: 2A86H-DF-580

FCC RF Exposure EUT Description: Emergency Radio Model No.: DF-580 FCC ID: 2A86H-DF-580 1. Limits According to KDB 447498 D01 General RF Exposure Guidance v06 The 1‐g and 10‐g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤50 mm are determined by: [(max power of channel, including tune‐up tolerance, mW)/(min. test separation distance, mm)]·[√f(GHz)]≤3.0 for 1‐g SAR and ≤ 7.5 for 10‐g extremity SAR, Where: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Exposure Evaluation Frequency (MHz) Output power (dBm) Tune Up Power (dBm) Max Tune Up power (mW) Min test separation distance mm Result Limit SAR Test Exclusion EDR 2441 2.50 2±1(3) 1.995 5 0.623 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2508194678-E, antenna gain = -0.58dBi Per KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. The test exclusion threshold is 0.623 which is<= 3, SAR testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

Inverted F Antenna Specification Summary ITEMANT SPEC Model Name 2.4G ANT HorizontalVertical 2400MHz 2 450MHz2500MHz2400MHz 2 450MHz 2500MHz Center Frequency -1.26 -0.76 -0.58 -5.25 -2.46 -1.86 MAX. Gain -0.58dB PolarizationHorizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) Contact Person: Engineer Liang Contact phone number: 18677565280 Address: No. 333, Kexing Road, Xiangzhou District, Zhuhai City Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain(dB) Frequency (MHz) Max Min Avg 2400 -1.26174 -30.0801 -7.18716 2450 -0.765802 -36.5604 -7.48023 2500 -0.585582 -22.0315 -6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain(dB) Frequency (MHz) Max Min Avg 2400 -5.2537 -22.1424 -12.4294 2450 -2.4652 -24.5837 -10.4702 2500 -1.86120 -29.5214 -9.20432 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

Page 1 of 48 Report No.: HK2508194678-E FCC Test Report Test Report On Behalf of Jiayin Nuoxin (Shenzhen) Technology Co., Ltd. For Emergency Radio Model No.: DF-580, DF-557 FCC ID: 2A86H-DF-580 Prepared For: Jiayin Nuoxin (Shenzhen) Technology Co., Ltd. No.142-5, Botanical Garden Road, Baolong Street, Longgang District, Shenzhen, China Prepared By: Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Aug. 19, 2025 ~ Sep. 23, 2025 Date of Report: Sep. 23, 2025 Report Number: HK2508194678-E Page 2 of 48 Report No.: HK2508194678-E Test Result Certification Applicant’s Name .................. : Jiayin Nuoxin (Shenzhen) Technology Co., Ltd. Address .................................. : No.142-5, Botanical Garden Road, Baolong Street, Longgang District, Shenzhen, China Manufacturer's Name ........... : HUIZHOU JIAYIN NUOXIN TECHNOLOGY CO., LTD. Address .................................. : Tangxia section, Chanji Village, Xinxu Town, Huiyang District, Huizhou City, Guangdong Province (Plant B), China Product Description Trade Mark ............................. : N/A Product Name ........................... : Emergency Radio Model and/or Type Reference...: DF-580, DF-557 Standards .............................. : 47 CFR FCC Part 15 Subpart C 15.247, ANSI C63.10: 2020 KDB 558074 D01 15.247 Meas Guidance v05r02 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test ............................................ : Date (s) of Performance of Tests ............ : Aug. 19, 2025 ~ Sep. 23, 2025 Date of Issue ........................................... : Sep. 23, 2025 Test Result ............................................... : Pass Testing Engineer Len Liao Technical Manager Sliver Wan Authorized Signatory Jason Zhou Page 3 of 48 Report No.: HK2508194678-E Table of Contents Page 1. Summary ............................................................................................................. 5 1.1. Test Standards ............................................................................................................................ 5 1.2. Test Description .......................................................................................................................... 5 1.3. Information of the Test Laboratory ............................................................................................ 6 1.4. Statement of the Measurement Uncertainty ............................................................................. 6 2. General Information ............................................................................................. 7 2.1. Environmental Conditions .......................................................................................................... 7 2.2. General Description of EUT ........................................................................................................ 7 2.3. Description of Test Modes and Test Frequency .......................................................................... 8 2.4. Equipments Used during the Test ............................................................................................... 9 2.5. Related Submittal(s) / Grant (s) ................................................................................................ 10 2.6. Modifications ............................................................................................................................ 10 2.7. Description of Test Setup .......................................................................................................... 10 2.8. Description of Support Units .................................................................................................... 11 3. Test Conditions and Results ................................................................................ 12 3.1. AC Conducted Emissions Test ................................................................................................... 12 3.2. Radiated Emissions and Band Edge .......................................................................................... 15 3.3. Maximum Peak Conducted Output Power ............................................................................... 26 3.4. 20dB Bandwidth ....................................................................................................................... 27 3.5. Frequency Separation ............................................................................................................... 30 3.6. Number of Hopping Frequency ................................................................................................ 32 3.7. Time of Occupancy (Dwell Time) ............................................................................................. 34 3.8. Out‐of‐Band Emissions ............................................................................................................. 37 3.9. Pseudorandom Frequency Hopping Sequence ........................................................................ 44 3.10. Antenna Requirement .......................................................................................................... 45 4. Test Setup Photos of the EUT ............................................................................. 46 5. Photos of the EUT .............................................................................................. 48 Page 4 of 48 Report No.: HK2508194678-E ** Modified History ** Revision Description Issued Date Remark Revi…

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Test Model: DF-580 Radiated Emission AC Conducted Emission RF Conducted Emission