2BAPO-CONTROLLER-MRF Classic 2.4G Controller-M

FCC Warning Statement Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. 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 device 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Section Company n Address: 80 Product Na FCC ID: 2B Model(s): R 2.911(d)(5 ) We, [Retro f through cer  Pro  Ide n Yours sinc e Name: Cla i Title: Man a Company n Signature: NOTE 1 “Covered List https://www.f c References; 1) 986446 D 0 https://apps.fc 2) Federal R e https://www.fe munications-s 2.911(d) name: Retro 04, Bulding ame: RF Cla BAPO-CON RF Classic 2 )(i) Equipm flag Tech Lt rtification is hibited fro m ntified as an erely, ire Zhang ager name: Retro ”; is the List o cc.gov/supplyc 01 Covered Eq cc.gov/oetcf/kd egister docume ederalregister. supply-chain-t )(5)(i) Ce oflag Tech L 2, SEG Sc assic 2.4G C TROLLER- 2.4G Contro ment Type td.] (“the ap not: m receiving n equipmen oflag Tech L of Equipment a chain/covered quipment v01 db/forms/FTS ent 2022-2826 gov/documen hrough-the Retro ertificatio Ltd. cience Park Controller-M -M oller-M pplicant”) ce an equipme nt type in the Ltd. and Services C list SearchResul t 63 published o nts/2023/02/06 oflag Tec on – Equi , Huaqiang M ertify that the ent authoriz e “Covered Covered By S tPage.cfm?sw on 02/06/23 6/2022-28263/ ch Ltd. 2. ipment T Road, Futia e equipmen zation pursu List” NOTE 1 Date: ection 2 of Th witch=P&id=32 /protecting-ag 911 (d)(5)(i) Eq Type an District, nt for which uant to § 2.9 Apr. 26, 20 e Secure Netw 5672 ainst-national- quipment Type A Shenzhen, authorizati o 903; of the F 23 works Act, ava -security-threa Attestation v1.2 China on is sough FCC rules. ailable at ats-to-the-com 2 t m

Section Company n Address: 80 Product Na FCC ID: 2B Model(s): R 2.911(d)(5 ) We, [Retrof applicant is chapter, as Yours sinc e Name: Cla i Title: Man a Company n Signature: NOTE 1 Delete option NOTE 2 “Covered List https://www.f c References; 1) 986446 D 0 https://apps.fc 2) Federal R e https://www.fe munications-s 2.911(d) name: Retro 04, Bulding ame: RF Cla BAPO-CON RF Classic 2 )(ii) Applica flag Tech Lt s not identi an entity p erely, ire Zhang ager name: Retro not applicable ”; is the List o cc.gov/supplyc 01 Covered Eq cc.gov/oetcf/kd egister docume ederalregister. supply-chain-t )(5)(ii) Ce oflag Tech L 2, SEG Sc assic 2.4G C TROLLER- 2.4G Contro ant filing td.] (“the ap fied NOTE 1 on roducing co oflag Tech L e to this applic of Equipment a chain/covered quipment v01 db/forms/FTS ent 2022-2826 gov/documen hrough-the Retro ertificatio Ltd. cience Park Controller-M -M oller-M plicant”) ce n the “Cove overed com Ltd. cation. and Services C list SearchResul t 63 published o nts/2023/02/06 oflag Tec on – App , Huaqiang M rtify that, a s ered List” NOT mmunication Covered By S tPage.cfm?sw on 02/06/23 6/2022-28263/ ch Ltd. plicant (C Road, Futia s of the date TE 2 ,establish s equipmen Date: ection 2 of Th witch=P&id=32 /protecting-ag 2.911 (d)(5 Covered L an District, e of the filing hed pursua nt. Apr. 26, 20 e Secure Netw 5672 ainst-national- 5)(ii) Applicant A List ) Shenzhen, g of the app nt to §1.500 23 works Act, ava -security-threa Attestation v1.3 China plication, the 002 of this ailable at ats-to-the-com 3 e m

Co m Ad d Pr o Mo d Pr o We act We an d issu our Sig Na m Title Com mpany: Ret dress: 804, oduct Name del Numbe oduct Desc authorize M on our beha declare tha d certificatio ues concern behalf shal nature: me: e: mpany: troflag Tech Bulding 2, S e: RF Classic er(s): RF Cla ription: RF MiCOM Lab alf on all ma at MiCOM L n of equipm ning the app ll have the s Claire Zh a Manager Retroflag T Agen Ltd. SEG Science c 2.4G Contr assic 2.4G C Classic 2.4 G bs Inc., 575 atters conce Labs Inc. is ment to the r proval applic same effect ang Tech Ltd. Retroflag T nt Auth e Park, Huaq roller-M ontroller-M G Controller- Boulder Co erning the c allowed to f regulatory a cation. Any t as acts of Tech Ltd. horizat iang Road, F -M ourt, Pleasa certification forward all i agencies as and all acts our own. tion Futian Distric anton, Califo of above na information s required a s carried ou Date: ct, Shenzhen ornia 94566 amed equip related to t nd to discu ut by MiCOM Apr. 26, 202 n, China 6, USA, to pment. the approva ss any M Labs on 23 al

Office o Federa 7435 O Columb USA Subjec t FCC ID To Wh o Pursua are req u docume These d propriet might b In addi t in Title busine s authoriz For 4 O For 1 It is ou r corresp docume authoriz Sincer e Signatu Name: Title: Ma of Engineeri l Communic Oakland Mills bia, MD 210 t; Request f D: 2BAPO-C om It May C nt to the pro uesting the ents from pu documents tary informa be harmful to Schemat Block Di Parts Lis Operatio Tune-up tional to abo 47 CFR §2 ss sensitive zed devices External Test Set Internal P User Ma 45 days, pu OR 180 days pu r understand pondence du ents and thi zation is iss ely, ure: Claire Zhan anager ing Techno cations Com s Road 046 for Confiden CONTROLL Concern, ovisions of t Commissio ublic disclos contain det ation in ope o our comp tic Diagram agram st onal Descrip Procedure ove mention .803 and th informatio n s, we reque Photos tup Photos Photos anual rsuant to P u ursuant to K ding that all uring the ce s informatio sued. g Retro logy mmission ntiality LER-M the Commis on to withho sure indefin tailed syste ration of th e any and wo m ption ned docume e importatio n remains c st Short Te ublic Notice KDB 72692 l measurem ertification re on will be av oflag Te ssion’s rule old the follow nitely. m and equi e equipmen ould give co ents, in orde on rules in T confidential rm Confide e DA 04-170 0 D01. ment test rep eview proce vailable for ech Ltd. s Title 47 S wing attach pment desc nt. The publ ompetitors a er to comply Title 47 CFR until the act ntiality of th 05. ports, FCC ess cannot public revi e . Sections §0. hment(s) as criptions an ic disclosu r an unfair ad y with the m R §2.1204, tual market he following ID label for be granted ew once the Date: Apr. 457 and § 0 confidentia d are consi re of these d vantage in marketing re while ensu ting of newly attachmen mat and as confide n e grant of eq 26, 2023 0.459, we al dered as documents the market . egulations ring that y t(s); ntial quipment .

Annex A External Photos Report No.:HK2303030638-E Page 1 of 4 Report No.:HK2303030638-E Page 2 of 4 Report No.:HK2303030638-E Page 3 of 4 Report No.:HK2303030638-E Page 4 of 4

FCC ID LABEL: Ca. 5mm x 20mm Label Location FCC ID: 2BAPO-CONTROLLER-M

Annex B Internal Photo Report No.:HK2303030638-E Page 1 of 3 Antenna Report No.:HK2303030638-E Page 2 of 3 Report No.:HK2303030638-E Page 3 of 3

FCC RF Exposure EUT Description: RF Classic 2.4G Controller‐M Model No.: RF Classic 2.4G Controller‐M FCC ID: 2BAPO‐CONTROLLER‐M 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 2480MHz: EIRP(dBm)=101.78(dBuV/m)-95.3=6.48(dBm) Frequency (MHz) Output power (dBm) Tune Up Power (dBm) Max Tune Up power dBm/mW Min test separatio n distance mm Result Limit (mW/cm 2 ) SAR Test Exclusion 2480 6.48 5.7±1 6.7/4.677 5 1.473 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2303030638‐E, antenna gain= 1.5dBi Per KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine RF Exposure test exclusion. The test exclusion threshold is 1.473 which is<= 3, RF Exposure 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

Tested Products. Antenna 1: PCB Antenna. • Frequency = 2.400GHz. • Frequency = 2.450GHz. • Frequency = 2.500GHz. Manufacturer :Retroflag Tech Ltd. Product：PCB Antenna ITEMSPEC. Model Name onboard PCB Center Frequency2400 MHz 1.21 dbi 2450 MHz 1.50 dbi 2500 MHz 0.7dbi MAX. GAIN 1.50dBi PolarizationLinear, Vertical Azimuth Beam PatternOmni-directional Impedance 50Ω Antenna Length SEE NEXT PAGE YZ Plane at f = 2.400GHz XZ Plane at f = 2.400GHz XY Plane at f = 2.400GHz Total Power (dBm) Angle (? 0 180 30 210 60 240 90270 120 300 150 330 2400MHz Total Power (dBm) Angle (? 0 180 30 210 60 240 90270 120 300 150 330 Total Power (dBm) Angle (? 0 180 30 210 60 240 90270 120 300 150 330 2400MHz 2400MHz 0 -5 -10 -15 -20 -25 -30 0 -25 -20 -15 -10 -45 -40 -35 -30 -5 -25 -20 -15 -10 -45 -40 -35 -30 -5 0 ANTENNA RADIATION PATTERN YZ Plane at f = 2.450GHz XZ Plane at f = 2.450GHz Angle (? XY Plane at f = 2.450GHz Total Power (dBm) Angle (? 0 180 30 210 60 240 90270 120 300 150 330 2450MHz Total Power (dBm) 0 180 30 210 60 240 90270 120 300 150 330 2450MHz Total Power (dBm) Angle (? 0 180 30 210 60 240 90270 120 300 150 330 2450MHz -30 -25 -20 -15 -10 -5 0 -25 -2 0 -15 -10 -45 -40 -3 5 -30 -5 -25 -20 -15 -10 -45 -40 -35 - 30 -5 0 0 YZ Plane at f = 2.500GHz XY Plane at f = 2.500GHz Total Power (dBm) Angle (? 0 180 30 210 60 240 90270 120 300 150 330 2500MHz XZ Plane at f = 2.500GHz Total Power (dBm) Angle (? 0 180 30 210 60 240 90270 120 300 150 330 2500MHz Total Power (dBm) Angle (? 0 180 30 210 60 240 90270 120 300 150 330 2500MHz -30 -25 -20 -15 -10 -5 0 -25 -20 -15 -10 -45 -40 -3 5 -30 -5 -25 - 20 -15 -10 -45 -40 -3 5 -30 -5 0 0

Page 1 of 28 Report No.: HK2303030638-E FCC Test Report Test report On Behalf of Retroflag Tech Ltd. For RF Classic 2.4G Controller-M Model No.: RF Classic 2.4G Controller-M FCC ID: 2BAPO-CONTROLLER-M Prepared For : Retroflag Tech Ltd. 804, Bulding 2, SEG Science Park, Huaqiang Road, Futian 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: Mar. 03, 2023 ~Mar. 21, 2023 Date of Report: Mar. 21, 2023 Report Number: HK2303030638-E Page 2 of 28 Report No.: HK2303030638-E TEST RESULT CERTIFICATION Applicant’s name ................. : Retroflag Tech Ltd. Address ................................. : 804, Bulding 2, SEG Science Park, Huaqiang Road, Futian District, Shenzhen, China Manufacture's Name ............ : Retroflag Tech Ltd. Address ................................. : 804, Bulding 2, SEG Science Park, Huaqiang Road, Futian District, Shenzhen, China Product description Trade Mark: RETROFLAG Product name ........................... : RF Classic 2.4G Controller-M Model and/or type reference : RF Classic 2.4G Controller-M Standards ............................. : FCC Rules and Regulations Part 15 Subpart C Section 15.249 ANSI C63.10: 2013 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 ............. : Mar. 03, 2023 ~Mar. 21, 2023 Date of Issue ........................................... : Mar. 21, 2023 Test Result .............................................. : Pass Testing Engineer : (Gary Qian) Technical Manager : (Eden Hu) Authorized Signatory : (Jason Zhou) Page 3 of 28 Report No.: HK2303030638-E Table of Contents Page 1 . Test Summary 5 1.1 . Test Procedures and Results 5 1.2 . Information of the Test Laboratory 5 1.3 . Measurement Uncertainty 5 2 . General Information 6 2.1 . General Description of EUT 6 2.2 . Operation of EUT During Testing 7 2.3 . Description of Test Setup 8 2.4 . Measurement Instruments List 9 3 . Conducted Emissions Test 10 3.1. Conducted Power Line Emission Limit 10 3.2. Test Setup 10 3.3. Test Procedure 10 3.4. Test Result 11 4. Radiated Emission Test 13 4.1. Radiation Limit 13 4.2. Test Setup 13 4.3. Test Procedure 14 4.4. Test Result 14 5. Band Edge 20 5.1. Limits 20 5.2. Test Procedure 20 5.3. Test Result 21 6. Occupied Bandwidth Measurement 23 6.1. Test Setup 23 6.2. Test Procedure 23 6.3. Measurement Equipment Used 23 6.4. Test Result 23 7. Antenna Requirement 25 8. Photograph of Test 26 9. Photos of the EUT 28 Page 4 of 28 Report No.: HK2303030638-E ** Modified History ** Revision Description Issued Data Remark Revision 1.0 Initial Test Report Release Mar. 21, 2023 Jason Zhou Page 5 of 28 Report No.: HK2303030638-E 1. Test Summary 1.1. Test Procedures and Results DESCRIPTION OF TEST SECTION NUMBER RESULT CONDUCTED EMISSIONS TEST 15.207 COMPLIANT RADIATED EMISSION TEST 15.249(a)/15.209 COMPLIANT BAND EDGE 15.249(d)/15.205 COMPLIANT OCCUPIED BANDWIDTH MEASUREMENT 15.215（c） COMPLIANT ANTENNA REQUIREMENT 15.203 COMPLIANT 1.2. Information of the Test Laboratory Shenzhen HUAK Testing Technology Co., Ltd. Add.: 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Testing Laboratory Authorization： A2LA Accreditation Code is 4781.01. FCC Designation Number is CN1229. Canada IC CAB identifier is CN0045. CNAS Registration Number is L9589. 1.3. Measurement Uncertainty Measurement Uncertainty Conducted Emission Expanded Uncertainty =2.71dB, k=2 Radiated emission expanded uncertainty(9kHz-30MHz) = 3.90dB, k=2 Radiated emission expanded uncertainty(30MHz-1000MHz)= 3.90dB, k=2 Radiated emission expanded uncertainty(Above 1GHz) = 4.28dB, k=2 Page 6 of 28 Report No.: HK2303030638-E 2. General Information 2.1. General Description of EUT Equipment: RF Classic 2.4G Controller-M Model Name: RF Classic 2.4G Controller-M Series Model: N/A Model Difference: N/A FCC ID: 2BAPO-CONTROLLER-M Antenna Type: PCB Antenna Antenna Gain: 1.5dBi Operation frequency: 2402-2480MHz Number of Channels: 79CH Modulation Type: GFSK Power Source: DC 3.7V from battery or DC 5V from Type-C Power Rating: DC 3.7V from battery or DC 5V from Type-C Page 7 of 28 Report No.: HK2303030638-E 2.1.1. Carrier Frequency of Channels Channel Frequency (MHz) Channel Frequency (MHz) Channel Frequency (MHz) 1 2402 28 2429 55 2456 2 2403 29 2430 56 2457 3 2404 30 2431 57 2458 4 2405 31 2432 58 2459 5 2406 32 2433 59 2460 6 2407 33 2434 60 2461 7 2408 34 2435 61 2462 8 2409 35 2436 62 2463 9 2410 36 2437 63 2464 10 2411 37 2438 64 2465 11 2412 38 2439 65 2466 12 2413 39 2440 66 2467 13 2414 40 2441 67 2468 14 2415 41 2442 68 2469 15 2416 42 2443 69 2470 16 2417 43 2444 70 2471 17 2418 44 2445 71 2472 18 2419 45 2446 72 2473 19 2420 46 2447 73 2474 20 2421 47 2448 74 2475 21 2422 48 2449 75 2476 22 2423 49 2450 76 2477 23 2424 50 2451 77 2478 24 2425 51 2452 78 2479 25 2426 52 2453 79 2480 26 2427 53 2454 27 2428 54 2455 2.2. Operation of EUT During Testing Operating Mode The mode is used: Transmitting mode Low Channel: 2402MHz Middle Channel: 2441MHz High Channel: 2480MHz Page 8 of 28 Report No.: HK2303030638-E 2.3. Description of Test Setup Operation of EUT during conducted testing: AC Plug Operation of EUT during radiation testing: Laptop information Model: TP00096A Input: DC 20V, 2.25A/3.25A The sample was placed (0.8m below 1GHz, 1.5m above 1GHz) above the ground plane of 3m chamber. Measurements in both horizon…

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Radiated Emission Conducted Emission