2A3OORB45Two Way Radio

USER’S MANUAL RB45 CONTENT Function Instructions................................................................................ Key Introductions...................................................................................... Function Operations.................................................................................. Definition of the Side Keys ........................................................................ Squelch Level............................................................................................ VOX .......................................................................................................... CTCSS/DCS .............................................................................................. FRS........................................................................................................... Type-C Charging........................................................................................ WARNINGS............................................................................................... GUARANTEE............................................................................................. 01 01 02 02 02 02 02 03 03 04 08 For downloading further resources: Brochures, Software/Firmware, Manual etc, Pls contact your direct reseller first OR go to website retevis.com and check “support” in the each product link to download it. 01 Function Instructions: 1.Working Frequency Range FRS 2.22 memory channels 3.English voice broadcast 4.50 CTCSS, 210 DCS 5.TOT 6.Battery save function 7.VOX function 8.Low battery alert 9.Scan function 10.Emergency alarm 11.Channel Lock 12.Scan 13.Monitor Key Introductions Speaker Type-C charging jack Power Earpiece jack TX/RX Indicator Volume + (Side Key 1) Volume - (Side Key 2) CH + CH - MIC PTT PTT Antenna PTT : transmitting CH + : shortly press is channel +. Long press the key for 3s to lock the channel and the radio makes a toot sound. After locking, press CH + and CH- are ineffective. Long press the key for 3s again and the radio makes a toot to unlock. Power Key Long press the key for 3s to turn on the radio and the radio broadcasts power on and the current channel number. Press the key again to turn off the radio and the radio has an OFF prompt. Volume + (Side Key 1): shortly press the key to increase the volume. Volume - (Side Key 2): shortly press the key to decrease the volume. 02 Function Operations Definition of the Side Keys Side key 1 and side key 2 have two functions: long press and short press. Side key 1: shortly press: Volume +, fixed mode (default). Side key 2: shortly press: Volume -, fixed mode (default). Long press: the following functions can be defined through the programming software: OFF, Channel Broadcast, Scan, Emergency Alarm, Monitor and VOX. Monitor: if someone is talking on your chosen channel, if there is no signal, the radio will make a rustling sound. OFF : there are no functions when you long press the side keys. Channel Broadcast: long press the side key, the voice broadcasts the current channel number of the radio. Scan: long press the side key to turn on the scan mode when an ON sound is heard. Scan mode will check the scanned channel activities which defines from 1 to 22 channels (Programming software can define whether the channel is scannable or not). When the scanned channel has a signal, the radio will automatically stop on that channel to communicate. To stop scanning, long press the side key, when an OFF sound is heard, that is to exit scan mode. Emergency Alarm: when the current channel has a transmitting frequency, long press the side key to turn on emergency alarm and the radio makes a alarm sound. To exit emergency alarm, press the PTT key. VOX: when the side key 1 or 2 is set as VOX through the programming software, long press the side key 1 or 2 to turn on or off the function. Note: the VOX level must be set through the programming software, such as the level is set as 3, the VOX function is effective when long pressing the side key 1 or 2 . Side key 1: long press: VOX (default) Side key 2: long press: Emergency Alarm (default) Squelch Level The squelch level is a stimulative reference level and is used to set internal squelch threshold in the CPU of the radio. You can preset the squelch level. In the user mode, the squelch level can be adjusted. Range: 0 (ON) - 9 (Deep) (Step is 1). Default: 3 Battery Save Battery save: ON: if no operations for 10s, the radio automatically enters the battery save status. OFF: the radio does not save power. VOX The VOX function of the radio is turned on through the programming software. The signal can be transmitted through the head-mounted earpiece. aVOX function: the VOX is effective only when the VOX function is turned on. bVOX Gain Level: when the voice level is higher than the set VOX gain level, the VOX automatically transmits. Gain levels are adjustable: 1-9 levels. Default: 5. Note: the VOX gain level must be set through the VOX level in the programming software. Battery Voltage Detection Low battery alert: when the voltage is lower than 3.3V, the radio prompts “Please charge your radio” every 20s. TOT TOT time can be set through the programming software: 30-180s. CTCSS/DCS The CTCSS/DCS signaling on the radio channel can be set through the programming software. When the channel is set to CTCSS/DCS signaling, the squelch is turned on only when the radio receives the same CTCSS or DCS signal. If uses different CTCSS/DCS to call on the same channel, the squelch is turned off and the radio flashes green of the indicator. 03 FRS Type-C Charging Open the earpiece jack to insert the Type-C charging cable to recharge the radio. When charging, the blue of the indicator lights up. When fully charged, the green of the indicator lights up. CH Number Frequency Sub Audio 1 4625625 67.0 2 462.5875 118.8 3 462.6125 127.3 4 462.6375 131.8 5 462.6625 136.5 6 462.6875 141.3 7 462.7125 146.2 8 467.5625 D243N 9 467.5875 …

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ShenzhenYsairTechnologyCo.,LTD 6/F,building6,Yunliintelligentpark,No.3Changfa,MiddleRoad,Yangmeicommunity,Bantianstreet,LonggangDistrict,Shenzhen,Guangdong，China FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:07-26-2023 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2A3OORB45 ShenzhenYsairTechnologyCo.,LTD](“theapplicant”)certifiesthattheequipmentforwhich authorizationissoughtisnot“covered”equipmentprohibitedfromreceivinganequipment authorizationpursuanttosection2.903oftheFCCrules. Sincerely, (Applicantsignature) (DongfangShen)

ShenzhenYsairTechnologyCo.,LTD 6/F,building6,Yunliintelligentpark,No.3Changfa,MiddleRoad,Yangmeicommunity,Bantianstreet,LonggangDistrict,Shenzhen,Guangdong，China FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:07-26-2023 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2A3OORB45 ShenzhenYsairTechnologyCo.,LTD](“theapplicant”)certifiesthat,asofthedateofthefilingofthe application,theapplicantisnotidentifiedontheCoveredListasanentityproducing“covered” equipment. Sincerely, (Applicantsignature) (DongfangShen)

CFR 47 §2.911(d)(7) U.S Agent U.S. AGENT LETTER OF ATTESTATION Date: 2023-07-17 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: 2A3OORB45 Shenzhen Ysair Technology Co., LTD (“the Applicant”) certifies that, as of the date of the filing of the application, RETEVIS INC. (U.S. agent). is our designated U.S. agent for service of process for the above referenced FCC ID. Shenzhen Ysair Technology Co., LTD (“the Applicant”)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. RETEVIS INC. (U.S. agent) 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 Information: Company Name: RETEVIS INC. Address: 1733 E BROOKPORT ST, COVINA, CA 91724 FRN: 0033657701 Tel.: + 1（626）3622594 Email: [email protected] Signed by (printed name): LIUYE LI Signature: Applicant: Shenzhen Ysair Technology Co., LTD Add: 6/F, building 6, Yunli intelligent park, No. 3, Changfa, Middle Road, Yangmei community, Bantian street, Longgang District, Shenzhen, Guangdong China Tel: +86-755-23481953 Email: [email protected] Signed by (printed name): Dongfang Shen Signature:

Shenzhen Ysair Technology Co., LTD 6 / F, building 6, Yunli intelligent park, No. 3 Changfa, Middle Road, Yangmei community, Bantian street, Longgang District, Shenzhen, Guangdong， China Agent Authorization Company: Shenzhen Ysair Technology Co., LTD Address: 6 / F, building 6, Yunli intelligent park, No. 3 Changfa, Middle Road, Yangmei community, Bantian street, Longgang District, Shenzhen, Guangdong， China Product Name: Two Way Radio Model Number(s): RB45 Product Description: Two Way Radio We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2023-07-26 Name: Dongfang Shen Company: Shenzhen Ysair Technology Co., LTD

ShenzhenYsairTechnologyCo.,LTD 6/F,building6,Yunliintelligentpark,No.3Changfa,MiddleRoad,Yangmeicommunity,Bantianstreet,LonggangDistrict,Shenzhen,Guangdong，China OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date: 2023-07-26 Subject;RequestforConfidentiality FCCID:2A3OORB45 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely Contactperson: DongfangShen

Report No.: AGC13372230601AP02 Page 1 of 4 EXTERNAL PHOTOS All VIEW OF EUT TOP VIEW OF EUT Report No.: AGC13372230601AP02 Page 2 of 4 BOTTOM VIEW OF EUT FRONT VIEW OF EUT Report No.: AGC13372230601AP02 Page 3 of 4 BACK VIEW OF EUT LEFT VIEW OF EUT Report No.: AGC13372230601AP02 Page 4 of 4 RIGHT VIEW OF EUT ****************************************End of Report*************************************

FCC ID Label Location 30mm&50mm

Report No.: AGC13372230601AP02 Page 1 of 5 INTERNAL PHOTOS OPEN VIEW OF EUT (FIGURE 1) OPEN VIEW OF EUT (FIGURE 2) Report No.: AGC13372230601AP02 Page 2 of 5 INTERNAL VIEW OF EUT (FIGURE 1) INTERNAL VIEW OF EUT (FIGURE 2) Antenna Report No.: AGC13372230601AP02 Page 3 of 5 INTERNAL VIEW OF EUT (FIGURE 3) INTERNAL VIEW OF EUT (FIGURE 4) Report No.: AGC13372230601AP02 Page 4 of 5 INTERNAL VIEW OF EUT (FIGURE 5) INTERNAL VIEW OF EUT (FIGURE 6) Report No.: AGC13372230601AP02 Page 5 of 5 INTERNAL VIEW OF EUT (FIGURE 7) ****************************************End of Report*************************************

Page 1 of 41 SAR Test Report Report No.: AGC13372230601FH01 FCC ID : 2A3OORB45 PRODUCT DESIGNATION : Two Way Radio BRAND NAME : RETEVIS MODEL NAME : RB45 APPLICANT : Shenzhen Ysair Technology Co., LTD DATE OF ISSUE : Jul. 10, 2023 STANDARD(S) : IEEE Std. 1528:2013 FCC 47 CFR Part 2§2.1093 IEEE Std C95.1 ™-2005 REPORT VERSION : V1.0 Attestation of Global Compliance(Shenzhen) Co., Ltd. Report No.: AGC13372230601FH01 Page 2 of 41 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Jul. 10, 2023 Valid Initial Release Report No.: AGC13372230601FH01 Page 3 of 41 Test Report Applicant Name Shenzhen Ysair Technology Co., LTD Applicant Address 6/F, building 6, Yunli intelligent park, No. 3, Changfa Middle Road, Yangmei community, Bantian street, Longgang District, Shenzhen, Guangdong, China Manufacturer Name Shenzhen Ysair Technology Co., LTD Manufacturer Address 6/F, building 6, Yunli intelligent park, No. 3, Changfa Middle Road, Yangmei community, Bantian street, Longgang District, Shenzhen, Guangdong, China Product Designation Two Way Radio Brand Name RETEVIS Model Name RB45 EUT Voltage DC3.7 V Applicable Standard IEEE Std. 1528:2013 FCC 47 CFR Part 2§2.1093 IEEE Std C95.1 ™-2005 Date of receipt of test item Jun. 08, 2023 Test Date Jul. 06, 2023 Report Template AGCRT- US -PTT/SAR (2021-04-20) Note: The results of testing in this report apply to the product/system which was tested only. Prepared By Bibo Zhang (Project Engineer) Jul. 06, 2023 Reviewed By Calvin Liu (Reviewer) Jul. 10, 2023 Approved By Max Zhang (Authorized Officer) Jul. 10, 2023 Report No.: AGC13372230601FH01 Page 4 of 41 TABLE OF CONTENTS 1. SUMMARY OF MAXIMUM SAR VALUE ......................................................................................................... 5 2. GENERAL INFORMATION ............................................................................................................................... 6 2.1. EUT DESCRIPTION......................................................................................................................................... 6 3. SAR MEASUREMENT SYSTEM ........................................................................................................................ 7 3.1. THE DASY5 SYSTEM USED FOR PERFORMING COMPLIANCE TESTS CONSISTS OF FOLLOWING ITEMS .................... 7 3.2. DASY5 E-FIELD PROBE ................................................................................................................................. 8 3.3. DATA ACQUISITION ELECTRONICS DESCRIPTION ............................................................................................... 8 3.4. ROBOT .......................................................................................................................................................... 9 3.5. LIGHT BEAM UNIT .......................................................................................................................................... 9 3.6. DEVICE HOLDER .......................................................................................................................................... 10 3.7. MEASUREMENT SERVER ............................................................................................................................... 10 3.8. PHANTOM ................................................................................................................................................. 11 4. SAR MEASUREMENT PROCEDURE ............................................................................................................ 12 4.1. SPECIFIC ABSORPTION RATE (SAR) .............................................................................................................. 12 4.2. SAR MEASUREMENT PROCEDURE ................................................................................................................ 13 5. TISSUE SIMULATING LIQUID ....................................................................................................................... 15 5.1. THE COMPOSITION OF THE TISSUE SIMULATING LIQUID..................................................................................... 15 5.2. TISSUE DIELECTRIC PARAMETERS FOR HEAD AND BODY PHANTOMS ............................................................... 15 5.3. TISSUE CALIBRATION RESULT ....................................................................................................................... 16 6. SAR SYSTEM CHECK PROCEDURE ........................................................................................................... 17 6.1. SAR SYSTEM CHECK PROCEDURES ............................................................................................................. 17 7. EUT TEST POSITION ...................................................................................................................................... 19 7.1. BODY WORN POSITION ................................................................................................................................ 19 8. SAR EXPOSURE LIMITS ............................................................................................................................... 20 9. TEST FACILITY .............................................................................................................................................. 21 10. TEST EQUIPMENT LIST .............................................................................................................................. 22 11. MEASUREMENT UNCERTAINTY ................................................................................................................ 23 12. POWER MEASUREMENT ............................................................................................................................ 27 13. TEST RESULTS ..........................................................................................................................…

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Page 1 of 18 CALIBRATION DATA PROBE CALIBRATION DATA Page 2 of 18 Page 3 of 18 Page 4 of 18 Page 5 of 18 Page 6 of 18 Page 7 of 18 Page 8 of 18 Page 9 of 18 Page 10 of 18 DAE CALIBRATION DATA Page 11 of 18 Page 12 of 18 Page 13 of 18 DIPOLE CALIBRATION DATA Page 14 of 18 Page 15 of 18 Page 16 of 18 Page 17 of 18 Page 18 of 18

Page 1 of 34 FCC Test Report Report No.: AGC13372230601FE10 FCC ID : 2A3OORB45 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Two Way Radio BRAND NAME : RETEVIS MODEL NAME : RB45 APPLICANT : Shenzhen Ysair Technology Co., LTD DATE OF ISSUE : Jul. 11, 2023 STANDARD(S) : FCC Part 95 Rules REPORT VERSION : V 1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC13372230601FE10 Page 2 of 34 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Jul. 11, 2023 Valid Initial Release Report No.: AGC13372230601FE10 Page 3 of 34 TABLE OF CONTENTS 1. GENERAL INFORMATION .............................................................................................................................. 5 2. PRODUCT INFORMATION .............................................................................................................................. 6 2.1 PRODUCT TECHNICAL DESCRIPTION ................................................................................................ 6 2.2 TEST FREQUENCY LIST ........................................................................................................................ 7 2.3 RELATED SUBMITTAL(S) / GRANT (S) ................................................................................................. 8 2.4 TEST METHODOLOGY .......................................................................................................................... 8 2.5 CALCULATION OF EMISSION INDICATORS ........................................................................................ 8 2.6 SPECIAL ACCESSORIES ....................................................................................................................... 8 2.7 EQUIPMENT MODIFICATIONS .............................................................................................................. 8 2.8 ANTENNA REQUIREMENT .................................................................................................................... 9 3. TEST ENVIRONMENT ................................................................................................................................... 10 3.1 ADDRESS OF THE TEST LABORATORY ............................................................................................ 10 3.2 TEST FACILITY ..................................................................................................................................... 10 3.3 ENVIRONMENTAL CONDITIONS......................................................................................................... 11 3.4 MEASUREMENT UNCERTAINTY ........................................................................................................ 11 3.5 LIST OF EQUIPMENTS USED ............................................................................................................. 12 4.SYSTEM TEST CONFIGURATION ................................................................................................................. 13 4.1 EUT CONFIGURATION ......................................................................................................................... 13 4.2 EUT EXERCISE ..................................................................................................................................... 13 4.3 CONFIGURATION OF TESTED SYSTEM ............................................................................................ 13 4.4 EQUIPMENT USED IN TESTED SYSTEM........................................................................................... 13 4.5 SUMMARY OF TEST RESULTS ........................................................................................................... 14 5. DESCRIPTION OF TEST MODES ................................................................................................................. 15 6.FREQUENCY STABILITY ............................................................................................................................... 16 6.1 PROVISIONS APPLICABLE .................................................................................................................. 16 6.2 MEASUREMENT PROCEDURE ........................................................................................................... 16 6.3 MEASUREMENT SETUP ...................................................................................................................... 16 6.4 MEASUREMENT RESULTS.................................................................................................................. 17 7. EMISSION BANDWIDTH ............................................................................................................................... 18 7.1 PROVISIONS APPLICABLE .................................................................................................................. 18 7.2 MEASUREMENT PROCEDURE ........................................................................................................... 18 7.3 MEASUREMENT SETUP ...................................................................................................................... 18 7.4 MEASUREMENT RESULTS.................................................................................................................. 19 8. SPURIOUS RATIATED EMISSION ................................................................................................................. 20 8.1 PROVISIONS APPLICABLE .................................................................................................................. 20 Report No.: AGC13372230601FE10 Page 4 of 34 8.2 MEASUREMENT PROCEDURE ........................................................................................................... 20 8.3 MEASUREMENT SETUP ...................................................................................................................... 21 8.4 MEASUREMENT RESULTS........................................…

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Report No.: AGC13372230601AP01 Page 1 of 2 TEST SETUP PHOTOS RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC13372230601AP01 Page 2 of 2 AC POWER LINE CONDUCTED TEST SETUP RF CONDUCTED TEST SETUP ****************************************End of Report*************************************