2BXKR-SR-633Ear-hung Walkie-Talkie

SR-633 Ear-hung Walkie-Talkie USER MANUAL CAUTION： This Walkie-Talkie is the product with excellent design and advanced technology. The following suggestions will help you fulfill your obligations under warranty terms and understand the safety knowledge of using walkie-talkie. 1. Don’t try to disassemble the walkie-talkie. Unauthorized disassemble may cause damage to the walkie-talkie. 2. This machine can use universal qualified mobile phone charger(5V). 3. Don’t expose the machine to sun for a long time or put it on a overheated place. 4. Don’t place it in a dusty or damp place. 5. Don’t use strong chemicals, cleaning agents or strong lotions to clean walkie-talkie. 6. If it is found to emit peculiar smell or smoke, place it on the open ground to avoid injury, and contact the distributer in time. 7. Don’t use the machine inflammable, explosive or other place where walkie-talkie is prohibited. 8. In order to obtain the best communication performance, it is recommended that least distance between walkie-talkies is 2 meters. 9. Please abide the local wireless management regulations, Contact with the distributor if you have any questions. Checklist： Open the package carefully, check the product and accessories according to the following list: Please conduct your distributor immediately if any damaged or missing happened! NO. ItemQTY 1Walkie-talkie1 2Charger1 3Charging line1 4Earphoe(Antenna) 1 5User manual1 Function & Description： FunctionDescriptionRemark Channel22 channels CTCSS/DCS38CTCSS+61CDCSS Volume Receiving vlume 1-8 Battery savingExtending standby time LED icon IconNameDescription Channel//Volume levelDisplaying channel while Transmitting/Receiving Battery meterThe more lattice there are, the more electricity there is. Transmitting/Receiving led The Green led is lighted on while receiving signal. The Red led is lighted on while transmitting signal. Lock indicatorThe light is on while key is locked up. Part Description： No.NameDescription 1 PowerTurn On ： Press the key for 3 seconds in power off mode. Turn Off ： Press the key for 3 seconds in power on mode. 2Pkey Press P key for 3 seconds to release the key lock. 3 ＋ （UP key） 1. Please lock off the key first, then press the key shortly to enter the setting mode to change the channel, Press the key longly to enter the setting mode to change the volume. 2.In the setting mode, press the key to increase channel/volume. 4 － （DOWN key） 1 Please lock off the key first, then press the key shortly to enter the setting mode to change the channel, Press the key longly to enter the settingmode to change the volume. 2.In the setting mode, press the key to decrease channel/volume. 5TYPE-C Socket Multi-function interface, charge, Earphone and program. 6PTT Push to Talk key 7Microphone Built in Microphone Operation Guide 1、Power On/Off Keep pressing Power key about 2 seconds, “Di-“will be sounded and LED will be lighted on, the machine entered in standby mode. Such as the following illustration: Keep pressing Power key about 2 seconds, “Di-“will be sounded and LED will be lighted off, and the machine enters power off mode. 2、Channel Setting In Standby mode, Press “+”/”-“ key shortly, . The led will display “CH” about 1 second, then the digit (“2”) will Blink, Press “+” /”-“key repeatedly to adjust to desired channel, Press “PTT” key to save the information and exit.. 3、CTCSS/DCS setting In order to prevent misoperation, the CTCSS/DCS of each channel is set to 67 Hz when the walkie talkie is manufactured. The CTCSS/DCS menu operation is no longer displayed on the equipment. If the CTCSS/DCS needs to be changed, 4、Volume Setting In Standby mode, Press “+”/”-“ key longly, . The led will display “VL” about 1 second, then the digit (“5”) will Blink, Press “+” /”-“key repeatedly to adjust to desired volume, Press “PTT” key to save the information and exit.. 5、Key lock setting Auto Lock: The key will be locked automatically when no key is pressed for about 38 seconds. Lock key: Press “P” key about 3 seconds andicon will be turned on, the other keys are ignored except power key and PTT. Lock off: Press “P” key about 3 seconds andicon will be turned off, the keys are back to active. 6、PTT prohibitted while Signal recieved This function was set to on/off by PC programming. If this function is active,we cannot transmitting voice while receiving the signals. If the channel is free,we can send the voice normally and “Di-” tone will heared. If the channel is busy,we cannot send the voice normally and “Di-Di-“ tone will be heared, then wait a moment and try again. Battery Information： ■Charge note Please charge the walkie talkie when battery low. Battery meter will roll while charging. The rolling meter will be stopped when the battery is full. FCC WARING: 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. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. –For a Class B digital device or peripheral, the instructions furnished to the user shall include the following or similar statement, placed in a prominent location in the text of the manual: NOTE: 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 televis…

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FCCID:2BXKR-SR-633 SR-633ExternalPhotographs

Labeland LabelLocation Product Name:Ear-hung Walkie-Talkie Model:SR-633 FCC ID:2BXKR-SR-633

FCCID:2BXKR-SR-633 SR-633InternalPhotographs

Page 1 of 41 SAR Test Report Report No.: AGC00319260604FH01 FCC ID : 2BXKR-SR-633 PRODUCT DESIGNATION : Ear-hung Walkie-Talkie BRAND NAME : / MODEL NAME : SR-633 APPLICANT : Huizhou Zhongchen Intelligent Technology Co., Ltd. DATE OF ISSUE : June 6, 2026 STANDARD(S) : IEEE Std. 1528:2013 FCC 47 CFR Part 2§2.1093 IEEE Std C95.1 ™-2019 REPORT VERSION : V1.0 Attestation of Global Compliance(Shenzhen) Co., Ltd. Report No.: AGC00319260604FH01 Page 2 of 41 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / June 6, 2026Valid Initial Release Report No.: AGC00319260604FH01 Page 3 of 41 Test Report Applicant Name Huizhou Zhongchen Intelligent Technology Co., Ltd. Applicant Address 9th Floor, Building 1, Plot 1 (Phase I), Bay Area-Yuepu Technology Smart Valley, Xinxu Town, Huiyang District, Huizhou City,China Manufacturer Name Huizhou Zhongchen Intelligent Technology Co., Ltd. Manufacturer Address 9th Floor, Building 1, Plot 1 (Phase I), Bay Area-Yuepu Technology Smart Valley, Xinxu Town, Huiyang District, Huizhou City,China Factory Name N/A Factory Address N/A Product Designation Ear-hung Walkie-Talkie Brand Name / Test Model SR-633 Series Model N/A Declaration of Difference N/A EUT Voltage DC 3.8V Applicable Standard IEEE Std. 1528:2013 FCC 47 CFR Part 2§2.1093 IEEE Std C95.1 ™-2019 Date of receipt of test item June 02, 2026 Test Date June 06, 2026 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) June 6, 2026 Reviewed By Jack Gui (Reviewer) June 6, 2026 Approved By Angela Li (Authorized Officer) June 6, 2026 Report No.: AGC00319260604FH01 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 6.2. SAR SYSTEM CHECK ................................................................................................................................... 18 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 .............…

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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

ShenzhenCTATestingTechnologyCo.,Ltd. Room106,Building1,YibaolaiIndustrialPark,QiaotouCommunity,Fuhai Street,Bao’anDistrict,Shenzhen,China TESTREPORT FCCPart95 ReportReferenceNo...............................: FCCID..........................................................: CTA26060203801 2BXKR-SR-633 Compiledby (position+printedname+signature) ......... : FileadministratorsZoeyCao Supervisedby (position+printedname+signature).........: ProjectEngineerAmyWen Approvedby (position+printedname+signature) ......... : RFManagerEricWang Dateofissue ................................................ :2026-06-02 TestingLaboratoryName ....................... :ShenzhenCTATestingTechnologyCo.,Ltd. Address.........................................................: Room106,Building1,YibaolaiIndustrialPark,QiaotouCommunity, FuhaiStreet,Bao‘anDistrict,Shenzhen,China Applicant’sname ...................................... :HuizhouZhongchenIntelligentTechnologyCo.,Ltd Address.........................................................: 9thFloor,Building1,Plot1(PhaseI),BayArea-YuepuTechnologySmart Valley,XinxuTown,HuiyangDistrict,HuizhouCity,China Testspecification ...................................... : Standard.......................................................: FCCPart95 ShenzhenCTATestingTechnologyCo.,Ltd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongastheShenzhenCTA TestingTechnologyCo.,Ltd.isacknowledgedascopyrightownerandsourceofthematerial.ShenzhenCTATesting TechnologyCo.,Ltd.takesnoresponsibilityforandwillnotassumeliabilityfordamagesresultingfromthereader's interpretationofthereproducedmaterialduetoitsplacementandcontext. Testitemdescription ............................... : Ear-hungWalkie-Talkie TradeMark ................................................... : / Manufacturer .............................................. : HuizhouZhongchenIntelligentTechnologyCo.,Ltd Model/Typereference.................................: SR-633 ListedModels..............................................: N/A Ratings..........................................................: DC3.8V Modulation...................................................: FM Hardwareversion ........................................ : V1.0 Softwareversion........................................: V1.0 Frequency ...................................................... FRS:462.5500MHz~462.7250MHz; FRS:462.5625MHz~462.7125MHz; FRS:467.5625MHz~467.7125MHz Result............................................................: PASS ReportNo.:CTA26060203801Page2of32 TESTREPORT EquipmentunderTest: Ear-hungWalkie-Talkie Model/Type: SR-633 ListedModels: N/A Applicant: HuizhouZhongchenIntelligentTechnologyCo.,Ltd Address: 9thFloor,Building1,Plot1(PhaseI),BayArea-Yuepu TechnologySmartValley,XinxuTown,HuiyangDistrict, HuizhouCity,China Manufacturer:HuizhouZhongchenIntelligentTechnologyCo.,Ltd Address : 9thFloor,Building1,Plot1(PhaseI),BayArea-Yuepu TechnologySmartValley,XinxuTown,HuiyangDistrict, HuizhouCity,China TestresultPass* Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetest laboratory ReportNo.:CTA26060203801Page3of32 Contents 1SUMMARY..............................................................................................................................................................4 1.1TESTSTANDARDS..................................................................................................................................................4 1.2TESTDESCRIPTION.....................................................................................................................................................4 1.3ADDRESSOFTHETESTLABORATORY..............................................................................................................................4 1.4TESTFACILITY............................................................................................................................................................4 1.5STATEMENTOFTHEMEASUREMENTUNCERTAINTY...........................................................................................................4 2GENERALINFORMATION.........................................................................................................................................6 2.1GENERALREMARKS...................................................................................................................................................6 2.2ENVIRONMENTALCONDITIONS.....................................................................................................................................6 2.3GENERALDESCRIPTIONOFEUT...................................................................................................................................6 2.4DESCRIPTIONOFTESTMODESANDTESTFREQUENCY......................................................................................................6 2.5EQUIPMENTSUSEDDURINGTHETEST...........................................................................................................................8 2.6RELATEDSUBMITTAL(S)/GRANT(S).............................................................................................................................8 2.7MODIFICATIONS........................................................................................................................................................8 3TESTCONDITIONSANDRESULTS.............................................................................................................................9 3.1MAXIMUMTRANSMITTERPOWER................................................................................................................................9 3.2OCCUPIEDBANDWIDTHANDEMISSIONMASK..............................................................................................................12 3.3MODULATIONLIMIT......................................…

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ReportNo.:CTA26060203801Page31of32 InternalPhotos ReportNo.:CTA26060203801Page32of32 **********************EndofReport**********************

1. Antenna Describe Antenna specification Antenna plateExternal antenna Model NameAF54 Antenna Gain3.0(Peak gain) Frequency Rang462-468MHz Company NameShenzhen Cient Communication TechnologyCo.,ltd. Address:501A&B-A Blockk,Donglian Building,Chuangye 2 road,Baoan District, Shenzhen,Guangdong,P.R china Size:4cm length 2. Test-up Diagram 3.AntennaGianandEfficiency 4.3Dand1DRadiationPatterns 462MHz: 465MHz 468MHz:

FCCID:2BXKR-SR-633 SR-633TestSetupPhotos Radiatedemission30MHz~1GHz Radiatedemissionabove1GHz RFTestPhotos SARTestPhotos Bodyworn0mm Fontofface25mm