2BCJV-S10Preamplifier

Rakoit Technology (SZ) Co., Ltd. (November 27, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for FCC ID: 2BCJV-S10 [Rakoit Technology (SZ) Co., Ltd.] (“the applicant”) 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, (Applicant signature) (Applicant printed name) Simon KinLun Wong Rakoit Technology (SZ) Co., Ltd. (November 27, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for FCC ID: 2BCJV-S10 [Rakoit Technology (SZ) Co., Ltd.] (“the applicant”) 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. Sincerely, (Applicant signature) (Applicant printed name) Simon KinLun Wong

Rakoit Technology (SZ) Co., Ltd. (November 27, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Preamplifier / S10+ / FCC ID: 2BCJV- S10) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 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 ☐ NOTE 1 ☒ Internal Photos ☐ NOTE 1 ☒ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No required to be submitted with this application be permanently withheld from public review. 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. Please contact me if there is any information you may need. Sincerely, Signature: Name: Simon KinLun Wong Title: Sales Director

Rakoit Technology (SZ) Co., Ltd. (November 27, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature: Name: Simon KinLun Wong Title: Sales Director

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 4 Model: S10+ External Photos Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 4 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 4 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 4 of 4

FCC ID LABEL: Label Location: FCC ID: 2BCJV-S10 Model No.: S10+

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2BCJV-S10 Applied procedures / limit According to FCC §15.247(i) and §1.1307(b)(1), 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 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 Time |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 1500-100,000 5 6 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz 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 Time |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 1500-100,000 1.0 30 Note: f = frequency in MHz * = Plane-wave equivalent power density MPE PREDICTION Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 Where: S = power density P = power input to antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna,R=20cm Test Result of RF Exposure Evaluation Modes& Channel Freq. (MHz) Tune up Produce power Maximu m peak output power (dBm) Output power to antenna (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW / cm2 ) Result 2.4G WIFI 802.11n(H T40)&245 2 13±1 14 25.1189 1.8155 (2.59dBi) 0.009 1 Pass BLE GFSK& MCH 1±1 2 1.5849 1.2589 (2.59dBi) 0.0006 1 Pass EDR 8DPSK& LCH 2±1 3 1.9953 1.2589 (2.59dBi) 0.0007 1 Pass

Shenzhen Kaipu Shen Communication Technology Co., Ltd Sample Confirmation Letter Customer Name： Ruikuo Technology entry name： S10+ Sample Name： Bluetooth antenna Color/Version： black/A Date of signature： 2024-01-19 Supplier confirmation make research and development structurequality Customer confirmation projectappearanceStructurequality conclusion □ Batch use MP □ Limited use （ ） K □ ROHS Supplier Name: Shenzhen Kaipu Shen Communication Technology Co., Ltd Supplier Address: 2nd Floor, Yulong Office Building, Longcheng Industrial Zone, No. 440 Longguan Avenue, Longhua New District, Shenzhen Telephone: 0755-29351613 Fax: 0755-29351510 E-mail:[email protected] Catalogue 1、 Cover 2、 Catalogue 3、 ICD chart 4、 Antenna data 5、 Full size measurement report 6、 Salt spray test report 7 、High and low temperature testing 8、Packaging method 3 . 1 : A n t e n n a I C D d i a g r am 2 3 Z 5 6 皮丙区 修吹人 百 看 存 E E D o | c c re r ar t s 1 R a r k " * as a n i p a r t a n t d r e n s i o n G o l d p r o d uc t i o n ɔ u s t b e c a n t r c l e d , n o l d a c ce p t a n c e z u s t r e a s u r e l e v e l B , a n d o t h e r d i z e ns i o n s a re d e s i g nr e f e renc e s i z e l e v e l S r B 8 2 t h es h a p e o f t h e p r o d u c t a n d t h e s i ze o f t h e c u t t i n g d i e u s t b e s t r i c t l y c o n t r o l l e d S h e n z h en K a i p u S h e n C o m m u r i c a t i o n T e c h n o l o g y C o . L t d 3 t h e s u r f a ce i s f r e e o f o i l s t a i n s , i p u r t i e s , b u r r s , e t e s x l x i e s 4 W i t h o u t c o n fi r r a t i o n f r o r s co n p a n y , z a t er i a l s c a n n o t b e c h a n g e d a r b i t r a r i l y , 5 R t a t e r i a l r e g i r e x e n t s e e c t r o l y t i c c o p p e r , c o pp e r f a l t h i c i n e s s o f 1 3 b S 1 0 + s o f a e * s t n u c t u r e s u b s t r a t e h a l f i n h a l f , G P t h e t o t a l t h i c i n e s s o f t h e a n t e n n a B P q p r o d u c t , i n c l u d i n g n v , a d h es i v e r e t e ase P r o d u c t t ◎ 9 0 . 0 3 E T a n t e n n a T y p e s h e q e n c g p a p e r , e t c , i s b e t w e e n a n d 1 1 9 6 t h e d o u b l e s i d e l a dh e s i ve x o d e l i ss e t a s 3 41 I w i t h a t h i c m e s s o f h u S u r f a c e P r o d uc t 0 . 0 2 k ( A s i m h a u l e u i d t t t a d t e > , u t i y i t u t a t . par t nus b er B c f e e d i n g p o i n tt r ea t r e n t ( a n t i o x i d an t t r e a t r e n t ) 7 0 . 0 4 Z 压 g h t t p a e 3 F a c v a g i n g a n d q ua li t y s t a n d a r d s r e f e r t o M s p a c r a g i n g s p e c i f i c a t i o n s a n d s q ua l i t y s t a n d a r d s re s p e c t i v e l y r s o r t i i g w s i t l o k C O LO U R : U N I T : mm S C A L E : | : I i t h e p r o d u d t u s t c o s p l y w i t h t h e r e q u r e a e n t s o f E U t i r e c t i v e 2 0 % . A 6 # G ( B M S ) V e s i o s s b a : & Z 3 4 5 6 4 . 1 4 . 1 - 1 S p ec i f i ca t i on S t an d a r d s T h e S 1 0 an t enna r e s on a t e s i n t h e o p e r a t i n g f r e q u enc y r a n g e o f 2 400 M - 2 480 . 4 . 1 - 2 M a t c h i n g c i r c u i t o f a n t e n n a ; B l u e t oo t h a n t e n n a : T h e m a t c h i n g c i r c u i t i s a s f o ll o w s : wu H F E 4 E 2 RF M o d u l e + A n t e nn a E 3 E 1 E l e m e n Attached image description t V a l u e E 1 ( 0 4 02 ) B T 天 线 E 2 ( 0 4 02 ) E 3 ( 0 4 02 Original motherboard matching ) 4 . 2 S t an d i n g W a v e R a t i o ( V S W R ) T e s t 4 . 2 - 1 T e s t S e t t i n g s T h e s t a n d i n g w a v e r a t i o ( V S W R ) t e s t i n g d e v i ce i s s e q u e n t i a ll y connec t e d a s f o ll o w s : E 5 7 1 B n e t w o r k a n a l y z e r → 5 0 o h m co a x i a l ca b l e → 1 5 0 m m l on g c o pp e r t u b e → t es t i n g f i x t u r e . P r oc ess i n g o f t es t fi x t u r e : U se a h a r d c a b l e t o l ea d o u t t h e S M A - J connec t o r f r om t h e 5 0 o h m t es t p o i n t o f t h e an t e n n a o n t h e P C B o f t h e t e s t e d o b j ec t C onnec t t h e co p p e r t u b e w i t h a c h o k e co i l , a n d t h en connec t o t h e r d e v i c es i n se q u en ce . 4 . 2 - 2 V o l t a g e S t an d i n g W a v e R a t i o T e s t : T h e f o ll o w i n g t a b l e s h o w s t h e s t a n d i n g w a v e r a t i o o f t h e e d g e f r e q u e nc y p o i n t s o f t h e BT a n t e nn a o p e r a t i n g f r e q u e n c y b an d : F r e ( M H Z ) 2 4 00 2 5 00 V S W R 2 . 1 1 . 8 4 . 2 - 3 P ass i ve T es t R es u l t s Bluetooth antenna passive test data 4.3 Whole machine antenna environme Your company provides original environmental treatment for the entire machine Full size measurement report customer Ruikuo Technology entry nameS10+ Material Science Electrolytic copper supplierKaipu Shen Measurement tools pixivMeasurement unitMM Measurement date 2024/1/12 N O . size upper limit + TOL.- TOL. lower limit Actual testing1 Actual testing2 Actual testing3 Actual testing4 Actual testing5 Actual testing6 UPPER≦100%LOWER≦100% 1 37.60 37.70 0.10 0.10 37.5037.62 37.61 37.58 37.62 37.62 37.61 20%20% 2 16.20 16.30 0.10 0.10 16.1016.18 16.22 16.21 16.21 16.19 16.19 20%20% 3 67.00 68.00 1.00 1.00 66.0067.30 67.20 67.20 67.25 67.30 67.20 30%0% 4 5 6 7 8 9 10 11 able: Chen JianReviewed by: Wu Xingtuo Salt spray test report Date: January 12, 2024 projectS10+-FPC antenna Customer Name Ruikuo Technology supplier Shenzhen Kaipu Shen Communication Technology Co., Ltd National testing standards GB/T 2423.2-2008 Sample situation Sample quantity：5PCS Test time 共计 24 H Test type： ■ NSS□ ASS□ CASS Experimental conditions Salt solution：5% PH:7.0 Temperature inside the box：35°Crelative humidity：85% Spray mode： ■continuity □ intermission Compressed air pressure： 1kg/cm² Salt spray settling rate：1-2ml/80cm2/h Mist collection： 1.4ml/80cm2/h Test cycle: __1_ cyclesSpray time： 24 h Experimental results Appearance after the experiment: The appearance is intact and undamaged, with no significant changes. Coating: No peeling or rusting Surface s…

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Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 56 TEST REPORT Compiled by: Reviewed by: Approved by: Zhou Kui Arron Liu Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Product Name: Preamplifier FCC ID: 2BCJV-S10 Trademark: Arylic Model Number: S10+ Prepared For: Rakoit Technology (SZ) Co., Ltd. Address: Fl.13th, Bldg.2B, Baiwang R&D Building, Baimang Community, Xili Street, Nanshan, Shenzhen, China Manufacturer: Rakoit Technology (SZ) Co., Ltd. Address: Fl.13th, Bldg.2B, Baiwang R&D Building, Baimang Community, Xili Street, Nanshan, Shenzhen, China Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: Nov. 11, 2024 Sample tested Date: Nov. 11, 2024 to Nov. 14, 2024 Issue Date: Nov. 14, 2024 Report No.: CTB24111102603RF02 Test Standards FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10:2013 Test Results PASS Remark: This is Bluetooth radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB24111102603RF02 Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 56 TABLE OF CONTENT Test Report Declaration Page 1. VERSION ........................................................................................................................................ 4 2. TEST SUMMARY ........................................................................................................................... 5 3. MEASUREMENT UNCERTAINTY ................................................................................................. 6 4. PRODUCT INFORMATION AND TEST SETUP ............................................................................ 7 4.1 Product Information .......................................................................................................................... 7 4.2 Test Setup Configuration .................................................................................................................. 7 4.3 Support Equipment........................................................................................................................... 7 4.4 Channel List ..................................................................................................................................... 8 4.5 Test Mode ........................................................................................................................................ 8 4.6 Test Environment ............................................................................................................................. 8 5. TEST FACILITY AND TEST INSTRUMENT USED ....................................................................... 9 5.1 Test Facility ...................................................................................................................................... 9 5.2 Test Instrument Used ....................................................................................................................... 9 6. AC POWER LINE CONDUCTED EMISSION ................................................................................ 12 6.1 Block Diagram Of Test Setup ......................................................................................................... 12 6.2 Limit ................................................................................................................................................ 12 6.3 Test procedure ............................................................................................................................... 12 6.4 Test Result ..................................................................................................................................... 14 7. RADIATED SPURIOUS EMISSION ............................................................................................. 16 7.1 Block Diagram Of Test Setup ......................................................................................................... 16 7.2 Limit ................................................................................................................................................ 16 7.3 Test procedure ............................................................................................................................... 17 7.4 Test Result ..................................................................................................................................... 18 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS ............................................... 27 8.1 Block Diagram Of Test Setup ......................................................................................................... 27 8.2 Limit ................................................................................................................................................ 27 8.3 Test procedure ............................................................................................................................... 27 8.4 Test Result ..................................................................................................................................... 28 9. COUDUCTED PEAK OUTPUT POWER ...................................................................................... 35 9.1 Block Diagram Of Test Setup ......…

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Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 2 Model: S10+ Radiated Emission Below 1G Above 1G Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 2 Conducted emissions