YZZGWN7670ELRLong-Range Dual-Band Wi-Fi 7 Access Point

Grandstream Networks, Inc. 126 Brookline Ave., 3rd Floor Boston, MA 02215, USA Tel: 1-617-5669300 Email: [email protected] Attestation Letter Date: 2026-06-10 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir or Madam: Our product Long-Range Dual-Band Wi-Fi 7 Access Point Model number: GWN7670ELR, FCC ID: YZZGWN7670ELR, For use in the US market, this product only support 2.4G Wi-Fi (2412-2462MHz, 802.11b/g/n20/n40/ax20/ax40/be20/be40 modes), 5G Wi-Fi (5150-5250MHz; 5250-5350MHz; 5470-5725MHz; 5725-5850MHz; 802.11a/n20/n40/ac20/ac40/ac80/ac160/ax20/ax40/ax80/ax160/be20/be40/be80/be160 modes). The other functions, bands and modes were disabled to use by manufacture in the software, and for 802.11ax/be mode, it only supports full RU configuration not partial RU, the partial RU was also disabled by software, the end user has no capability to activate it. Sincerely, Signature Junwei Wang VP of HW Engineering

Grandstream Networks, Inc. 126 Brookline Ave., 3rd Floor Boston, MA 02215, USA Tel: 1-617-5669300 Email: [email protected] CFR 47 §2.911(d)(5)(i) Attestation Letter Attestation Letter Date: 2026-06-10 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i) Filing FCC ID: YZZGWN7670ELR Grandstream Networks, Inc. certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, Signature Contact Person: Junwei Wang VP of HW Engineering

Grandstream Networks, Inc. 126 Brookline Ave., 3rd Floor Boston, MA 02215, USA Tel: 1-617-5669300 Email: [email protected] CFR 47 §2.911 (d)(5)(ii) Attestation Letter Attestation Letter Date: 2026-06-10 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(ii) Filing FCC ID: YZZGWN7670ELR Grandstream Networks, Inc. certifies that as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, Signature Contact Person: Junwei Wang VP of HW Engineering

U.S. AGENT LETTER OF ATTESTATION Date: 2026-06-10 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID: YZZGWN7670ELR Grandstream Networks, Inc. certifies that, as of the date of the filing of the application, Grandstream Networks, Inc. is our designated U.S. agent for service of process for the above referenced FCC ID. Grandstream Networks, Inc. accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Grandstream Networks, Inc. accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent and Applicant Information: Name: Grandstream Networks, Inc. Address: 126 Brookline Ave., 3rd Floor Boston, MA 02215, USA FRN: 0020352431 Tel.: 1-617-5669300 Email: [email protected] Signed by (printed name): Junwei Wang Signature:

Grandstream Networks, Inc. 126 Brookline Ave., 3rd Floor Boston, MA 02215, USA Tel: 1-617-5669300 Email: [email protected] QA-FR-170-B 7/29/2014 FCC Authorization Date: 2026-06-10 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We Grandstream Networks, Inc., the undersigned, hereby authorizes Bay Area Compliance Laboratories Corp. (Shenzhen) to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corp. (Shenzhen) on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signature: Junwei Wang VP of HW Engineering

Grandstream Networks, Inc. 126 Brookline Ave., 3rd Floor Boston, MA 02215, USA Tel: 1-617-5669300 Email: [email protected] FCC Confidential Authorization Date: 2026-06-10 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: YZZGWN7670ELR In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Grandstream Networks, Inc. hereby requests long-term confidential treatment of information accompanying this application as outlined below: • Block Diagram • Schematics • Operation Description • Software Security Description As well as short-term confidential treatment of information accompanying this application for a period of 180 days after grant is issued as outlined below: • Internal Photos • User’s Manual • External Photos • Test Set-up Photos The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature: Junwei Wang VP of HW Engineering

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: 2601R15111E-RF FCC ID LABEL AND LOCATION FCC ID Label FCC ID Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925)

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601R15111E-RFC TR-EM-RF012 Page 31 of 189 Version 4.2 RF EXPOSURE EVALUATION MAXIMUM PERMISSIBLE EXPOSURE (MPE) Applicable Standard According to subpart §1.1310, systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for Maximum Permissible Exposure (MPE) (§1.1310, §2.1091) (B) Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minutes) 0.3–1.346141.63*(100)30 1.34–30824/f2.19/f*(180/f²)30 30–30027.50.0730.230 300–1500//f/150030 1500–100,000//1.030 f = frequency in MHz; * = Plane-wave equivalent power density; According to §1.1310 and §2.1091 RF exposure is calculated. Result Calculation formula: Prediction of power density at the distance of the applicable MPE limit S = PG/4R² = power density (in appropriate units, e.g. mW/cm 2 ); 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, the power gain factor, is normally numeric gain; R = distance to the center of radiation of the antenna (appropriate units, e.g., cm); For simultaneously transmit system, the calculated power density should comply with: Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601R15111E-RFC TR-EM-RF012 Page 32 of 189 Version 4.2 Calculated Data: For worst case: Antenna Gain # Max Tune-up Power # Mode Frequency (MHz) (dBi)(numeric)(dBm)(mW) Evaluation Distance (cm) Power Density (mW/cm 2 ) MPE Limit (mW/cm 2 ) 2.4G Wi-Fi2412-24629.559.02 21125.89 250.1447 1 5150-525011.9215.56 1979.43250.1574 1 5250-535011.9215.56 21125.89 250.2495 1 5470-572511.9215.56 20100.00 250.1982 1 5G Wi-Fi 5725-585011.9215.56 24251.19 250.4979 1 Note: 1) The tune up conducted power and antenna gain was declared by the applicant. 2) The antenna gain should be the directional gain. 3) The 2.4G Wi-Fi and 5G Wi-Fi can simultaneous transmitting. Simultaneous transmitting consideration (worst case): The ratio=MPE 2.4G Wi-Fi /limit+MPE 5G Wi-Fi /limit = 0.1447/1.0+0.4979/1.0 =0.643<1.0, so simultaneous exposure is compliant. To maintain compliance with the FCC’s RF exposure guidelines, place the equipment at least 25cm from nearby persons. Result: Compliant

Note: The information marked # is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Customer model name, addresses, names, trademarks etc. are included. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report must not be used by the customer to claim product certification, approval, or endorsement by NVLAP or any agency of the U.S. Government. This report may contain data that are not covered by the NVLAP accreditation and are marked with an asterisk “▼”. Bay Area Compliance Laboratories Corp. (Shenzhen) 5F(B-West) , 6F, 7F, the 3rd Phase of Wan Li Industrial Building D, Shihua Rd, FuTian Free Trade Zone, Shenzhen, China Tel: +86-755-33320018 Fax: +86-755-33320008 www.baclcorp.com.cn TR-EM-RF012 Page 1 of 189 Version 4.2 TEST REPORT Applicant Name:Grandstream Networks, Inc. Address:126 Brookline Ave., 3rd Floor Boston, MA 02215, USA Report Number:2601R15111E-RFC FCC ID:YZZGWN7670ELR IC:11964A-GWN7670ELR Test Standard (s) FCC PART 15.247; RSS-GEN ISSUE 5, FEBRUARY 2021 AMENDMENT 2; RSS-247, ISSUE 4, JULY 2025 Sample Description Product Type:Long-Range Dual-Band Wi-Fi 7 Access Point Model No.:GWN7670ELR Multiple Model(s) No.:N/A Trade Mark:GRANDSTREAM Date Received:2026-03-23 Issue Date:2026-07-06 Test Result:Pass ▲ ▲ In the configuration tested, the EUT complied with the standards above. Prepared and Checked By:Approved By: Wills YuNancy Wang RF EngineerRF Supervisor Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601R15111E-RFC TR-EM-RF012 Page 2 of 189 Version 4.2 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ..........................................................................................................................3 GENERAL INFORMATION ........................................................................................................................................4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT)......................................................................................4 OBJECTIVE ....................................................................................................................................................................4 TEST METHODOLOGY....................................................................................................................................................4 MEASUREMENT UNCERTAINTY .....................................................................................................................................5 TEST FACILITY ..............................................................................................................................................................5 SYSTEM TEST CONFIGURATION ...........................................................................................................................6 SUMMARY OF TEST RESULTS ................................................................................................................................9 TEST EQUIPMENT LIST ..........................................................................................................................................10 REQUIREMENTS AND TEST PROCEDURES ......................................................................................................12 AC LINE CONDUCTED EMISSIONS...............................................................................................................................12 SPURIOUS EMISSIONS ..................................................................................................................................................15 99% OCCUPIED BANDWIDTH & 6 DB EMISSION BANDWIDTH ....................................................................................18 MAXIMUM CONDUCTED OUTPUT POWER ...................................................................................................................21 POWER SPECTRAL DENSITY ........................................................................................................................................22 100 KHZ BANDWIDTH OF FREQUENCY BAND EDGE....................................................................................................26 CONDUCTED SPURIOUS EMISSION...............................................................................................................................28 DUTY CYCLE ...............................................................................................................................................................30 RF EXPOSURE EVALUATION ................................................................................................................................31 ANTENNA REQUIREMENT .....................................................................................................................................35 TEST DATA AND RESULTS .....................................................................................................................................37 AC LINE CONDUCTED EMISSIONS...............................................................................................................................37 SPURIOUS EMISSIONS ..................................................................................................................................................40 RF CONDUCTED DATA ..............................................................................................................................................151 6dB Emission Bandwidth.........................................................................................................................…

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Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601R15111E-RFC TR-EM-RF012 Page 165 of 189 Version 4.2 Chain 0 802.11be40_RU_Full_2422MHz_Chain 0 802.11be40_RU_Full_2437MHz_Chain 0 Chain 1 802.11be40_RU_Full_2452MHz_Chain 0 802.11be40_RU_Full_2422MHz_Chain 1 802.11be40_RU_Full_2437MHz_Chain 1 802.11be40_RU_Full_2452MHz_Chain 1 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601R15111E-RFC TR-EM-RF012 Page 166 of 189 Version 4.2 Maximum Conducted Output Power ModeAntenna Test Frequency (MHz) Average Output Power (dBm) Limit (dBm) EIRP (dBm) EIRP Limit (dBm) Verdict 241220.9829.37 27.6136 Pass 243720.9629.37 27.5936 Pass Chain 0 246220.9029.37 27.5336 Pass 241219.4129.56 25.8536 Pass 243720.1629.56 26.636 Pass 802.11b Chain 1 246219.5029.56 25.9436 Pass 241218.1129.37 24.7436 Pass 243719.0729.37 25.736 Pass Chain 0 246218.2429.37 24.8736 Pass 241215.1529.56 21.5936 Pass 243718.8129.56 25.2536 Pass 802.11g Chain 1 246215.1529.56 21.5936 Pass 241213.8729.37 20.536 Pass 243716.9429.37 23.5736 Pass Chain 0 246212.5429.37 19.1736 Pass 241212.9529.56 19.3936 Pass 243716.9729.56 23.4136 Pass Chain 1 246212.9029.56 19.3436 Pass 241216.4426.45 25.9936 Pass 243719.9726.45 29.5236 Pass 802.11n20 Chain 0+Chain 1 246215.7326.45 25.2836 Pass 242211.0029.37 17.6336 Pass 243717.2929.37 23.9236 Pass Chain 0 245211.2829.37 17.9136 Pass 242210.9929.56 17.4336 Pass 243717.1829.56 23.6236 Pass Chain 1 245211.1729.56 17.6136 Pass 242214.0126.45 23.5636 Pass 243720.2526.45 29.836 Pass 802.11n40 Chain 0+Chain 1 245214.2426.45 23.7936 Pass Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601R15111E-RFC TR-EM-RF012 Page 167 of 189 Version 4.2 ModeAntenna Test Frequency (MHz) Average Output Power (dBm) Limit (dBm) EIRP (dBm) EIRP Limit (dBm) Verdict 241213.2829.37 19.9136 Pass 243717.2229.37 23.8536 Pass Chain 0 246213.3129.37 19.9436 Pass 241213.0829.56 19.5236 Pass 243717.1229.56 23.5636 Pass Chain 1 246213.1529.56 19.5936 Pass 241216.1926.45 25.7436 Pass 243720.1826.45 29.7336 Pass 802.11be20_RU_Full Chain 0+Chain 1 246216.2426.45 25.7936 Pass 242211.3629.37 17.9936 Pass 243717.5329.37 24.1636 Pass Chain 0 245211.4229.37 18.0536 Pass 242211.2829.56 17.7236 Pass 243717.4029.56 23.8436 Pass Chain 1 245211.3229.56 17.7636 Pass 242214.3326.45 23.8836 Pass 243720.4826.45 30.0336 Pass 802.11be40_RU_Full Chain 0+Chain 1 245214.3826.45 23.9336 Pass Note1: EIRP = Peak Output Power + Antenna gain Note2: For 802.11n /be modes, the device support beam-forming function, per KDB 662911 D01 Multiple Transmitter Output v02r01: where Each antenna is driven by no more than one spatial stream; N SS = the number of independent spatial streams of data; N ANT = the total number of antennas g j,k = 10 G k /20 if the k th antenna is being fed by spatial stream j, or zero if it is not; G k is the gain in dBi of the k th antenna. Ant 0Antenna Gain6.63dBi Ant 1Antenna Gain6.44dBi Directional Gain: 9.55dBi Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601R15111E-RFC TR-EM-RF012 Page 168 of 189 Version 4.2 Power Spectral Density ModeAntenna Test Frequency (MHz) Reading (dBm/10kHz) DC Factor （ dB ） PSD (dBm/10kHz) Limit (dBm/10kHz) Verdict 2412-2.450-2.457.37Pass 2437-1.660-1.667.37Pass Chain 0 2462-2.440-2.447.37Pass 2412-2.960-2.967.56Pass 2437-2.680-2.687.56Pass 802.11b Chain 1 2462-3.290-3.297.56Pass 2412-7.980.2 -7.78 7.37Pass 2437-6.480.2 -6.28 7.37Pass Chain 0 2462-8.030.2 -7.83 7.37Pass 2412-10.320.2 -10.12 7.56Pass 2437-6.550.2 -6.35 7.56Pass 802.11g Chain 1 2462-10.470.2 -10.27 7.56Pass 2412-11.960.2 -11.76 7.37Pass 2437-8.210.2 -8.01 7.37Pass Chain 0 2462-12.290.2 -12.09 7.37Pass 2412-11.360.2 -11.16 7.56Pass 2437-7.120.2 -6.92 7.56Pass Chain 1 2462-11.210.2 -11.01 7.56Pass 2412-8.64 0.2 -8.44 4.45Pass 2437-4.62 0.2 -4.42 4.45Pass 802.11n20 Chain 0+Chain 1 2462-8.71 0.2 -8.51 4.45Pass 2422-15.630.4-15.237.37Pass 2437-9.840.4-9.447.37Pass Chain 0 2452-15.930.4-15.537.37Pass 2422-15.910.4-15.517.56Pass 2437-9.930.4-9.537.56Pass Chain 1 2452-16.270.4-15.877.56Pass 2422-12.760.4-12.364.45Pass 2437-6.870.4-6.474.45Pass 802.11n40 Chain 0+Chain 1 2452-13.090.4-12.694.45Pass 2412-11.420.19-11.237.37Pass 2437-5.760.19-5.577.37Pass 802.11be20_RU_FullChain 0 2462-11.080.19-10.897.37Pass Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601R15111E-RFC TR-EM-RF012 Page 169 of 189 Version 4.2 ModeAntenna Test Frequency (MHz) Reading (dBm/3kHz) DC Factor （ dB ） PSD (dBm/3kHz) Limit (dBm/3kHz) Verdict 2412-11.640.19-11.457.56Pass 2437-9.030.19-8.847.56Pass Chain 1 2462-11.390.19-11.207.56Pass 2412-8.52 0.19-8.334.45Pass 2437-4.08 0.19-3.894.45Pass 802.11be20_RU_Full Chain 0+Chain 1 2462-8.22 0.19-8.034.45Pass 2422-15.690.4-15.297.37Pass 2437-9.800.4-9.407.37Pass Chain 0 2452-15.420.4-15.027.37Pass 2422-16.260.4-15.867.56Pass 2437-9.650.4-9.257.56Pass Chain 1 2452-15.490.4-15.097.56Pass 2422-12.96 0.4-12.564.45Pass 2437-6.71 0.4-6.314.45Pass 802.11be40_RU_Full Chain 0+Chain 1 2452-12.44 0.4-12.044.45Pass Note: PSD = Reading + DC Factor Note2: For 802.11n /be modes, the device support beam-forming function, per KDB 662911 D01 Multiple Transmitter Output v02r01: where Each antenna is driven by no more than one spatial stream; N SS = the number of independent spatial streams of data; N ANT = the total number of antennas g j,k = 10 G k /20 if the k th antenna is being fed by spatial stream j, or zero if it is not; G k is the gain in dBi of the k th antenna. Ant 0Antenna Gain6.63dBi Ant 1Antenna Gain6.44dBi Directional Gain: 9.55dBi Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601R15111E-RFC TR-EM-RF012 Page 170 of 189 Version 4.2 Chain 0 802.11b_2412MHz_Chain 0 802.11b_2437MHz_Chain 0 Chain 1 802.11b_2462MHz_Chain 0 802.11b_2412MHz_Chain 1 802.11b_2437MHz_Chain 1 802.11b_2462MHz_Chain 1 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601R15111E-RFC TR-EM-RF012 Page 171 of 189 Version 4.2 Chain 0 802.11g_2412MHz_Chain 0 802.11g_2437MHz_Chain 0 Chai…

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1 / 2 GWN767OELR 2G0 天线技术规格书 Antenna Specification Brand Name: GRANDSTREAM Manufacture: SHENZHEN CHAOLIU NETWORK TECHNOLOGIES CO., LTD Manufacturing address：14th Floor, Building-C, Coolpad Building, Gaoxin North District, Science Park, Nanshan District, Shenzhen Product Number（or model Nanme）: 118-00225-00 设计规格 specifications 频率范围 Frequency（MHz） 2400～2500 电压驻波比 VSWR ≦2.0：1 峰值增益 Peak Gain（dBi） 6.63 效率 Efficiency（%） ≧75 天线类型 Type PCB Antenna 辐射方向 Radiation Properties 全向 Omni-directional 最大输入功率 Max Input Power(Watts) 2 极化方式 Polarization 水平 horizontal 工作温度 Operation Temperature -40°C to 85°C 储存温度 Storage Temperature -40°C to 85°C 相对湿度 Relative Humidity 40% to 95% 环保认证 ROHS Compliant 通过 Yes 辐射方向图 Radiation Patterns(unit:dB) phi=0deg phi=90deg 2 / 2 theta=90deg 3D 总成图 Mechanical Drawing(unit:mm) ▲规格书到此结束END OF THE SPECIFICATION.

1 / 2 GWN766OELR 2G1 天线技术规格书 Antenna Specification Brand Name: GRANDSTREAM Manufacture: SHENZHEN CHAOLIU NETWORK TECHNOLOGIES CO., LTD Manufacturing address：14th Floor, Building-C, Coolpad Building, Gaoxin North District, Science Park, Nanshan District, Shenzhen Product Number（or model Nanme）: 118-00154-00 设计规格 specifications 频率范围 Frequency（MHz） 2400～2500 电压驻波比 VSWR ≦2.0：1 峰值增益 Peak Gain（dBi） 6.44 效率 Efficiency（%） ≧75 天线类型 Type PCB Antenna 辐射方向 Radiation Properties 全向 Omni-directional 最大输入功率 Max Input Power(Watts) 2 极化方式 Polarization 水平 horizontal 工作温度 Operation Temperature -40°C to 85°C 储存温度 Storage Temperature -40°C to 85°C 相对湿度 Relative Humidity 40% to 95% 环保认证 ROHS Compliant 通过 Yes 辐射方向图 Radiation Patterns(unit:dB) phi=0deg phi=90deg theta=90deg 3D 2 / 2 总成图 Mechanical Drawing(unit:mm) ▲规格书到此结束END OF THE SPECIFICATION.