2AC23-WKCT27WIFI+BT Module

Hui Zhou Gaoshengda Technology Co., LTD WKCT27M2501 PAGE 1 OF 4 Version 1.0 WIFI+BT Module IEEE 802.11 a/b/g/n/ac 2T/2R Model Number: WKCT27M2501 Product Descrition The WKCT27M2501 is a complete dual-band(2.4GHz and 5GHz)WIFI 2×2 MIMO module. This module provides a high level of integration with a dual-stream IEEE 802.11ac MAC/ base band /radio and Bluetooth 5.0.The WLAN operation supports 20MHz,40MHz and 80MHz channels for data rates up to 866.7Mbps. It fully complies with IEEE 802.11 a/b/g/n/ac feature rich wireless connectivity at high standards,delivers reliable,cost-effective, throughput from an extended distance. Product Features Product Specification Model WIF+BT Module Product Name WKCT27M2501 Standard 802.11 a/b/g/n/ac Interface USB Data Transfer Rate 1,2,5.5,6,11,12,18,22,24,30,36,48,54,60,90,120 and maximum of 866.7Mbps Modulation Method GFSK,π/4-DQPSK,8DPSK(bluetooth) DQPSK,DBPSK,CCK(802.11b) QPSK,BPSK,16QAM,64QAM with OFDM (802.11g) QPSK,BPSK,16QAM,64QAM with OFDM (802.11n) QPSK,BPSK,16QAM,64QAM with OFDM (802.11a) QPSK,BPSK,16QAM,64QAM,256QAM with OFDM (802.11ac) Frequency Band BLUETOOTH 2402~2480 MHz WIFI 2.4G: 2412~2462 MHz 5G: 5150~5350MHz, 5470~5725MHz，5725~5850MHz Operation Mode Infrastructure Security WEP, TKIP, AES, WPA, WPA2 Operating Voltage 3.3V±10% Current Consumption ＜1000mA Antenna Type PCB Operating Temperature 0 ~ 70°C ambient temperature Storage Temperature -40 ~ 80°C ambient temperature Humidity 5 to 95 % maximum (non-condensing) ◆ Complies with IEEE 802.11b/g/n for 2.4GHz and IEEE 802.11a/n/ac 5GHz Wireless LAN. ◆ Bluetooth v5.0 ◆ Two transmit and Two receive path(2T2R) ◆ Works with all existing network nfrastructure. ◆ Capable of up to 128-Bit WEP Encryption. ◆ Freedom to roam while staying connected. ◆ UP to 866.7 Mbps High-Speed Transfer Rate in 802.11ac mode of operation. ◆ Operating Systems：Linux,Win7, Win8, Win10,XP ◆ Low power consumption. ◆ Easy to install and configure. ◆ High speed usd 2.0 interface. Hui Zhou Gaoshengda Technology Co., LTD WKCT27M2501 PAGE 2 OF 4 Version 1.0 NOTICE: ◆please keep this product and accessories attached to the places which children can't touch; ◆do not splash water or other liquid onto this product, otherwise it may cause damage; ◆do not put this product near the heat source or direct sunlight, otherwise it may cause deformation or malfunction; ◆please keep this product away from flammable or naked flame; ◆please do not repair this product by yourself. Only qualified personnel can be repaired. FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. This equipment complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. Please notice that if the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains FCC ID:2AC23-WKCT27” any similar wording that expresses the same meaning may be used. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator & your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. The module is limited to OEM installation ONLY. The OEM integrator is responsible for ensuring that the end-user has no manual instruction to remove or install module. Hui Zhou Gaoshengda Technology Co., LTD WKCT27M2501 PAGE 3 OF 4 Version 1.0 The module is limited to installation in mobile application. A separate approval is required for all other operating configurations, including portable configurations with respect to Part 2.1093 and difference antenna configurations. There is requirement that the grantee provide guidance to the host manufacturer for compliance with Part 15B requirements. The module complies with FCC Part 15.247 / Part 15.407 and apply for Single module approval. Trace antenna designs: Not applicable. Antennas: 2.4G 5G PCB antenna & 1.5 dBi PCB antenna & 4.8 dBi BT Antenna: BRADE TYPE GAIN GSD PCB antenna 2.8 dBi The antenna is permanently attached, can’t be replaced. Canada Statement This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to the following two conditions: (1) This device may not cause interference; and (2) This device must accept any interference, including interference that may cause undesired operation of the device. Le présent appareil est conforme aux CNR d’Industri…

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C5266091_X8_Ed.1 1/1 Letter of Authorization Company:Hui Zhou Gaoshengda Technology Co.,LTD Address: NO.75 Zhongkai Development AreaHuizhouGuangdongChina Product Name:WIFI+BT Module Model Number: WKCT27M2501 FCC Identifier: 2AC23-WKCT27 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name:Hui Guan Date:2022/1/20 Title: Engineer Signature of applicant:

C5266091_X10_Ed.1 1/1 Hui Zhou Gaoshengda Technology Co.,LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2022/1/20 Subject: Request for Confidentiality FCC ID: 2AC23-WKCT27 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality ID Label/Location No No Attestation Statement No No External Photos No Block Diagram Schematics Test Report No No Test Setup Photos No User’s Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) No No SDR Software / Security Info No Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name:Hui Guan Title: Engineer

C5266091_X9_Ed.1 1/1 Hui Zhou Gaoshengda Technology Co.,LTD Modular Transmitter Approval Request Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Company name: Hui Zhou Gaoshengda Technology Co.,LTD FCC ID: 2AC23-WKCT27 Gentlemen, In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 ‘Module Certification Guide v02’. FCC ID : 2AC23-WKCT27,has been examined against the following requirements. Requirement per 15.212 and KDB 996369 D01 ‘Modular Certification Guide v02 Explanation from Grantee (do not write yes/no, but explain why product complies/how it is achieved) The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly The module has its own RF shielding. The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal The modular has buffered data inputs, it is integrated in chip The module must contain power supply regulation on the module The modular has buffered data inputs, it is integrated in chip The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per Sections 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b) Antenna is independent fixed The module must demonstrate compliance in a stand-alone configuration All power lines derived from the host device are regulated before energizing other circuits internal The module must be labelled with its permanently affixed FCC ID label, or use an electronic display (See KDB Publication 784748 about labelling requirements) The label is independent fixed The module must comply with all specific rules applicable to the transmitter including all the conditions provided in the integration instructions by the grantee compliant with all applicable FCC rules. Detail instructions are given in the Users Manual The module must comply with RF exposure requirements approved to comply with the applicable RFexposure requirement, please see the MPE evaluation with 20cm as the distance restriction. Name: Hui Guan Date: 2022/1/20 Title: Engineer Signature of applicant

External Photos M/N: WKCT27M2501

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Internal photos M/N: WKCT27M2501

FCC ID: 2AC23-WKCT27 EST Technology Co. ,Ltd Report No. ESTE-R2201204 Page 1 of 11 FCC 47 CFR MPE REPORT Hui Zhou Gaoshengda Technology Co., Ltd WIFI+BT Module Model Number: WKCT27M2501 FCC ID: 2AC23-WKCT27 Applicant: Hui Zhou Gaoshengda Technology Co.,LTD Address: NO.75 Zhongkai Development Area, Huizhou, Guangdong, China Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2201204 Date of Test: Dec. 17, 2021~Jan. 18, 2022 Date of Report: Jan. 24, 2022 FCC ID: 2AC23-WKCT27 EST Technology Co. ,Ltd Report No. ESTE-R2201204 Page 2 of 11 Maximum Permissible Exposure 1. Applicable Standards 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 limit for maximum permissible exposure. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as a mobile device whereby a distance of 0.2m normally can be maintained between the user and the device. 1.1. Limits for Maximum Permissible Exposure (MPE) (a) Limits for Occupational/Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times ︱E︱ 2 ,︱H︱ 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842/f 4.89/f (900/f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-10000 5 6 (b) Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times ︱E︱ 2 ,︱H︱ 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-10000 1.o 30 Note: f=frequency in MHz; *Plane-wave equivalent power density FCC ID: 2AC23-WKCT27 EST Technology Co. ,Ltd Report No. ESTE-R2201204 Page 3 of 11 1.2. MPE Calculation Method E (V/m) = d G×P×30 Power Density: Pd (W/m 2 ) = 377 E 2 E = Electric Field (V/m) P = Peak RF output Power (W) G = EUT Antenna numeric gain (numeric) d = Separation distance between radiator and human body (m) The formula can be changed to Pd = 2 d×377 G×P×30 From the peak EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained FCC ID: 2AC23-WKCT27 EST Technology Co. ,Ltd Report No. ESTE-R2201204 Page 4 of 11 2. Conducted Power Result Antenna 1 Mode Frequency (MHz) Peak output power (dBm) Peak output power (mW) Target power (dBm) GFSK 2402 4.51 2.8249 4 ± 1 2441 3.15 2.0654 3 ± 1 2480 1.36 1.3677 1 ± 1 8-DPSK 2402 4.28 2.6792 4 ± 1 2441 2.97 1.9815 2 ± 1 2480 1.17 1.3092 1 ± 1 GFSK 1M 2402 4.02 2.5235 4 ± 1 2440 2.71 1.8664 2 ± 1 2480 0.88 1.2246 0 ± 1 IEEE 802.11b 2412 17.12 51.5229 17 ± 1 2437 17.38 54.7016 17 ± 1 2462 17.17 52.1195 17 ± 1 IEEE 802.11g 2412 22.83 191.8669 22 ± 1 2437 22.83 191.8669 22 ± 1 2462 22.83 191.8669 22 ± 1 IEEE 802.11n HT20 (2.4G) 2412 22.65 184.0772 22 ± 1 2437 22.47 176.6038 22 ± 1 2462 22.50 177.8279 22 ± 1 IEEE 802.11n HT40 (2.4G) 2422 22.63 183.2314 22 ± 1 2437 22.46 176.1976 22 ± 1 2452 22.48 177.0109 22 ± 1 IEEE 802.11a 5180 12.121 16.2967 12 ± 1 5200 12.222 16.6802 12 ± 1 5240 11.846 15.2968 11 ± 1 5260 12.441 17.5428 12 ± 1 5300 12.492 17.7501 12 ± 1 5320 12.465 17.6401 12 ± 1 5500 12.882 19.4178 12 ± 1 5580 13.151 20.6586 13 ± 1 5700 13.767 23.8067 13 ± 1 5745 11.490 14.0929 11 ± 1 FCC ID: 2AC23-WKCT27 EST Technology Co. ,Ltd Report No. ESTE-R2201204 Page 5 of 11 5785 11.536 14.2430 11 ± 1 5825 11.551 14.2922 11 ± 1 IEEE 802.11n HT20 (5G) 5180 10.483 11.1764 10 ± 1 5200 10.609 11.5054 10 ± 1 5240 10.853 12.1703 10 ± 1 5260 10.915 12.3453 10 ± 1 5300 12.747 18.8235 12 ± 1 5320 12.722 18.7154 12 ± 1 5500 13.156 20.6824 13 ± 1 5580 13.517 22.4750 13 ± 1 5700 11.098 12.8766 11 ± 1 5745 11.254 13.3475 11 ± 1 5785 11.345 13.6301 11 ± 1 5825 11.429 13.8963 11 ± 1 IEEE 802.11ac VHT20 5180 10.573 11.4104 10 ± 1 5200 10.685 11.7085 10 ± 1 5240 10.903 12.3112 10 ± 1 5260 11.443 13.9412 11 ± 1 5300 11.430 13.8995 11 ± 1 5320 11.529 14.2200 11 ± 1 5500 11.860 15.3462 11 ± 1 5580 12.226 16.6955 12 ± 1 5700 12.802 19.0634 12 ± 1 5745 10.553 11.3580 10 ± 1 5785 10.563 11.3841 10 ± 1 5825 10.699 11.7463 10 ± 1 IEEE 802.11n HT40 (5G) 5190 11.847 15.3003 11 ± 1 5230 12.092 16.1883 12 ± 1 5270 12.293 16.9551 12 ± 1 5310 12.364 17.2346 12 ± 1 5510 12.900 19.4984 13 ± 1 5590 13.173 20.7635 13 ± 1 5670 13.605 22.9351 13 ± 1 5755 14.012 25.1884 14 ± 1 5795 14.043 25.3688 14 ± 1 FCC ID: 2AC23-WKCT27 EST Technology Co. ,Ltd Report No. ESTE-R2201204 Page 6 of 11 IEEE 802.11ac VHT40 5190 11.841 15.2792 11 ± 1 5230 12.163 16.4551 12 ± 1 5270 12.219 16.6686 12 ± 1 5310 12.379 17.2942 12 ± 1 5510 12.817 19.1293 12 ± 1 5590 13.227 21.0233 13 ± 1 5670 13.602 22.9192 13 ± 1 5755 13.962 24.9000 13 ± 1 5795 14.109 25.7573 14 ± 1 IEEE 802.11ac VHT80 5210 12.476 17.6848 12 ± 1 5290 12.878 19.3999 12 ± 1 5530 13.436 22.0597 13 ± 1 5610 13.789 23.9276 13 ± 1 5775 14.470 27.9898 14 ± 1 FCC ID: 2AC23-WKCT27 EST Technology Co. ,Ltd Report No. ESTE-R2201204 Page 7 of 11 Antenna 2 Mode Frequency (MHz) Peak output power (dBm) Peak output power (mW) Target power (dBm) IEEE 802.11b 2412 17.41 55.0808 17 ± 1 2437 17.82 60.5341 17 ± 1 2462 17.75 59.5662 17 ± 1 IEEE 802.11g 2412 22.51 178.2379 22 ± 1 2437 22.36 172.1869 22 ± 1 2462 22.61 182.3896 22 ± 1 IEEE 802.11n HT20 (2.4G) 2412 22.58 181.1340 22 ± 1 2437 22.39 173.3804 22 ± 1 2462 22.77 189.2344 22 ± 1 IEEE 802.11n HT40 (2.4G) 2422 22.33 171.0015 22 ± 1 2437 22.46 176.1976 22 ± 1 2452 22.40 173.7801 22 ± 1 IEEE 802.11a 5180 12.539 17.9432 12 ± 1 5200 12.748 18.8278 12 ± 1 5240 12.975 19.8381 12 ± 1 5260 13.201 20.8978 13 ± 1 5300 13.388 21.8172 13 ± 1 5320 13.398 21.8675 13 ± 1 5500 13.845 24.2382 13 ± 1 5580 14.219 26.4180 14 ± 1 5700 14.710 29.5801 14 ± 1 5745 13.160 20.7014 13 ± 1 5785 13.221 20.9…

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FCC ID: 2AC23-WKCT27 EST Technology Co., Ltd Report No. ESTE-R2201199 Page 1 of 70 FCC PART 15C TEST REPORT FOR CERTIFICATION On Behalf of Hui Zhou Gaoshengda Technology Co., Ltd WIFI+BT Module Model Number: WKCT27M2501 FCC ID: 2AC23-WKCT27 Applicant : Hui Zhou Gaoshengda Technology Co.,LTD Address: NO.75 Zhongkai Development Area, Huizhou, Guangdong, China Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2201199 Date of Test: Dec. 17, 2021~Jan. 18, 2022 Date of Report: Jan. 24, 2022 FCC ID: 2AC23-WKCT27 EST Technology Co., Ltd Report No. ESTE-R2201199 Page 2 of 70 TABLE OF CONTENTS Description Page TEST REPORT VERIFICATION......................................................................................................................... 3 1. GENERAL INFORMATION ................................................................................................................. 5 1.1. Description of Device (EUT) ........................................................................................................... 5 1.2. Antenna Information ........................................................................................................................ 5 1.3. Information of RF Cable .................................................................................................................. 5 2. SUMMARY OF TEST ......................................................................................................................... 6 2.1. Summary of test result ...................................................................................................................... 6 2.2. Test Facilities ................................................................................................................................... 7 2.3. Measurement uncertainty ................................................................................................................. 8 2.4. Assistant equipment used for test ..................................................................................................... 8 2.5. Block Diagram ................................................................................................................................. 8 2.6. Test mode ......................................................................................................................................... 9 2.7. Channel List ................................................................................................................................... 10 2.8. Power Setting of Test Software ...................................................................................................... 10 2.9. Test Equipment ............................................................................................................................... 11 3. MAXIMUM PEAK OUTPUT POWER ................................................................................................. 12 3.1. Limit ............................................................................................................................................... 12 3.2. Test Setup ....................................................................................................................................... 12 3.3. Spectrum Analyzer Setting ............................................................................................................. 12 3.4. Test Procedure ................................................................................................................................ 12 3.5. Test Result ...................................................................................................................................... 13 4. 20 DB BANDWIDTH ....................................................................................................................... 18 4.1. Limit ............................................................................................................................................... 18 4.2. Test Setup ....................................................................................................................................... 18 4.3. Spectrum Analyzer Setting ............................................................................................................. 18 4.4. Test Procedure ................................................................................................................................ 18 4.5. Test Result ...................................................................................................................................... 19 5. CARRIER FREQUENCY SEPARATION .............................................................................................. 24 5.1. Limit ............................................................................................................................................... 24 5.2. Test Setup ....................................................................................................................................... 24 5.3. Spectrum Analyzer Setting ............................................................................................................. 24 5.4. Test Procedure ................................................................................................................................ 24 5.5. Test Result ...................................................................................................................................... 25 6. NUMBER OF HOPPING CHANNEL .................................................................................................. 30 6.1. Limit ............................................................................................................................................... 30 6.2. Test Setup ................................................................................…

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Conducted Test Radiated Test (Below 1GHz) Radiated Test (Above 1GHz)