2A4NF-BK-450WIRELESS REARVIEW SYSTEM

PARKVISION BicycleWirelessRearviewSystemUserManual Model:BK-450 Inaccordancewiththelatestairtransportregulations,thebatterylevelofall productscontainingbatteriesmustnotexceed25%whenshipped.Therefore, thedeviceyoureceivemayhaveaverylowcharge.Pleasebesuretochargeit beforeuse. Note:Themonitor,camera,andremotecontrolarewirelesslypairedatthe factoryandcanbeuseddirectly.Ifyoureplacethecamera,remotecontrol, oriftheimagedoesnotdisplay,pleasereferto[Section8:Wireless CameraandMonitorPairing]. 一、 PackageContents 14.3"WirelessMonitorx1 2RearViewCamerax1 3TurnSignalRemoteControlx1 4MonitorMountBracketx2 5MonitorMountBracketx1 6CameraSymmetricalSnapBracketx1 7ThinRubberPadforCameraBracket(forrod diameter∅30mm-∅35mm)x2 8TurnSignalRemoteControlStrapx2 9ScrewsforCameraSymmetricalSnap Bracketx2 10CrossWrenchx1 二、MonitorSpecifications ItemParameter ScreenSize4.3"IPS Resolution800×480 BatteryCapacity5000mAh BatteryLife6hours WaterproofRatingIP65 ChargingParametersDC5V/2.5A ImageFlipSupported(Normal/Mirror) ImageZoom3xzoomsupported AutoDimmingSupported ChargingTime5hours 三、CameraSpecifications ItemParameter ImageFormatAHD EffectivePixels1920×1080(1080P) ViewingAngle95°(max) BatteryCapacity3000mAh WaterproofRatingIP65 OperatingVoltage3.7V ChargingParametersDC5V/2.5A NightVisionSupported BatteryLife4hours ChargingTime3hours 四、 MonitorAppearance&ButtonDescription Operation:Usethebuttonsonthemonitor. 【】 Powerbutton(longpress2sec)/Menuconfirm 【▲】Up/Right 【☰】Menubutton/Back 【▼】Down/Left ImageSettingsSystemPairing Flip(Vert.Normal)AutoBrightness:Off/OnCameraPairing Zoom（x0.8， standard,x1.2,x1.5） TurnSignal Setting:Off/5s/10s/15s RemotePairing Brightness(1-10)UIGuide Contrast(1-10)Language Hue(1-10)RestoreDefault 五、 IndicatorLightGuide -Monitorcharging:RedLEDsteadyon -Monitorfullycharged:GreenLEDsteadyon -Cameracharging:BlueLEDflashing -Camerafullycharged:4blueLEDssteadyon -Monitorredlight:Batterycriticallylow,willshutdownsoon–please charge Monitor ChargingTime UsageTimeCamera ChargingTime UsageTime 1H2H1H2H 2H4H2H3H 4H6H3H4H 六、InstallationSteps MonitorInstallationCameraInstallation Attachthe monitormount brackettothe monitor Choose the appropria terubber padand fixthe bracket withthe M5screw Loosenthe bracketscrew, installthe bracket(with monitor)onto thehandlebar, thentighten thescrew Slidethe camera intothe bracket magnetic allyvia theguide grooveon theback Adjustthe monitorangle andtighten thescrew Adjustthe camera angleand tighten thescrew usingthe wrench 七、BasicFunctions&Operation A.ImageZoomSteps EnterMenu(☰)→ImageSettings→Confirm()→Dropdown(▼)→Image ZoomIn→Confirm() B. ImageFlipSteps EnterMenu[☰] → ImageSettings → Confirm[] → ScrollDown[▼] → Image Flip → Confirm[] C.TurnSignalSettingSteps EnterMenu[☰] → ScrollDown[▼] → SystemSettings → Confirm[] → Scroll Down[▼] → AutoTurn-offLight → Confirm[] StandardFactorySetting: Theturnsignallightdefaultstoa15-secondtimer.Duringthisperiod,theremote controlbuttonsaredisabledandcannotinterruptthecycle;thesystemmustwait forthetimertoexpire. CustomSetting: Ifthetimerfunctionisdisabled(i.e.,nodurationisset),theturnsignalcanbeturned offatanytimeusingtheremotecontrolbuttons. D.AutoBrightnessSettingSteps EnterMenu[☰]→SystemSettings→Confirm[]→AutoBrightness→ Confirm[] 八、WirelessCamera&MonitorPairing Theproductispre-pairedatthefactory.Undernormalconditions,the rearviewimagewillappearwhenpoweredon.Ifyoureplacethecamera ornoimageisshown,followthestepsbelowtore-pair. WirelessPairingProcedure ： Ensurebothmonitorandcameraareoff. Longpressthemonitorpowerbuttonfor2secondstoturniton.Enterthe menu,select“PairingSettings”,pressthepowerbuttontoconfirm,anda 30-secondcountdownwillbegin. Whilethecamerapairingcountdownisactive,longpressthecamera powerbuttonfor2secondstopoweriton–pairingwillhappen automatically.Uponsuccessfulpairing,theimagewillappear. Ifpairingfailsonce,restartthecameraandretry. EnterMenu[☰]→CodeSettings→Confirm[]→CameraPairing→ Confirm[] 九、TurnSignalRemoteControl&CameraPairing Note:Theinstallationdistancebetweentheturnsignalremotecontrol andthedisplayshouldnotexceed1meter. Longpressthemonitorpowerbuttonfor2secondstoturniton.Enterthe menu,select“RemotePairing”,pressthepowerbuttontoconfirm,anda 30-secondcountdownwillbegin. Duringtheremotepairingcountdown,simultaneouslylongpressboththe leftandrightdirectionkeysontheremotecontroltopair. EnterMenu[☰]→PairingSettings→Confirm[]→RemoteControlPairing →Confirm[] Steps ： 1.EnterMenu→PairingSettings→Select“RemotePairing”. 2.Executepairing:Ontheturnsignalremote,simultaneouslylongpressthe leftandrightdirectionkeys. Result: 1.Success:The30-secondcountdownonthescreendisappears. 2.Failure:Thecountdownreacheszero.Restartthedevicesandrepeatthe stepsabove. 十、Troubleshooting NoIssuePossibleCause&Solution 1 Blackscreen,powerlightonCameranotturnedonorbattery depleted–chargethecamera Wirelessconnectionlost–re-pair. 2 ScreencompletelydeadBatteryfullydrained–chargefor1–2 hoursbeforeturningon 3 Bluescreenorgarbled image Wirelesssignalinterference– ensuredistancebetweencamera andmonitorislessthan10mwith nometalobstacles Pairingerror–re-pair 4 ShortcamerabatterylifeBatterynotfullycharged–charge for4hours Lowtemperaturereducesbattery life–normalforlithiumbatteries. 十一、After-salesContact:​[email protected] FCCStatement 1.ThisdevicecomplieswithPart15oftheFCCRules.Operationissubjecttothe following twoconditions: (1)Thisdevicemaynotcauseharmfulinterference. (2)Thisdevicemustacceptanyinterferencereceived,includinginterferencethatmay causeundesiredoperation. 2.Changesormodificationsnotexpresslyapprovedbythepartyresponsiblefor compliancecouldvoidtheuser’sauthoritytooperatetheequipment. Note:ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaclassB digitaldevice,pursuanttoPart15oftheFCCRules.Theselimitsaredesignedtoprovide reasonableprotectionagainstharmfulinterferenceinaresidentialinstallation. Thisequipmentgeneratesusesandcanradiateradiofrequencyenergyand,ifnot installedandusedinaccordancewiththeinstructions,maycauseharmfulin…

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* the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. SC6060029 U.S. Agent Designation for Service of Process - Certification Attestation Letter 6/4/2026 TO: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2A4NF-BK-450 FRN of applicant: 0031988603 Per section 2.911(d)(7) of the FCC rules, GUANGZHOU PJ-AUTO ELECTRONIC TECHNOLOGY LIMITED FRN: 0023645484(“the applicant”) certifies that the equipment for which authorization is sought is designated to thefollowing U.S. agent* for service of process: Company Name: Global Product Services and Consultation LLC FCC Registration Number (FRN): 0033406703 Physical U.S. Company Address: 328 W Palm Ave. Monrovia, CA91016 Contact Person: Michael Chan Tel: +1 626 366 4358 Agent Email Address: [email protected] The above contact person accepts the obligation for service of process. 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. Applicant Signed:Agent Signed (if different from Applicant): Signed: Printed name: Kevin Wu Title: Manager Company Name: GUANGZHOU PJ-AUTO ELECTRONIC TECHNOLOGY LIMITED Date: 6/4/2026 Signed: Printed name: Michael Chan Title: Technical Director Company Name: Global Product Services and Consultation LLC Date: 6/18/2026

External

Internal 2.4GHz Antenna

RF EXPOSURE EVALUATION EUT Specification EUT WIRELESS REARVIEW SYSTEM FCC ID 2A4NF-BK-450 Antenna gain (Max) 0.51 dBi Operation Frequency 2.410GHz ~ 2.473GHz Classification Per Stipulated Test Standard §15.247(i), §2.1093 Max. output power 15.83 dBm (0.0383W) Test Requirement: According to ß 15.247(i) and ß 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. KDB 447498D01(v06) has the following exclusion for portable devices: Routine SAR evaluation refers to that specifically required by ß 2.1093, using measurements or computer simulation. When routine SAR evaluation is not required, portable transmitters with output power greater than the applicable low threshold require SAR evaluation to quality for TCB approval. One antenna is available for the EUT. The minimum separation distance is 40mm. Page 2 of 2 Measurement Result Transmit Frequency (MHz) Mode Measured Power (dBm) Tune up Power (dBm) Max tune up power (dBm) Calculation Result 1-g SAR Results 2410 2.4GHz 15.83 16±1 17 1.944 3 PASS Signature: Alan He Date: 2026-6-17

Appendix A Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT 2.4GHz 2410 Ant1 100 0 0 NVNT 2.4GHz 2441.5 Ant1 100 0 0 NVNT 2.4GHz 2473 Ant1 100 0 0 2 / 31 Duty Cycle NVNT 2.4GHz 2410MHz Ant1 Duty Cycle NVNT 2.4GHz 2441.5MHz Ant1 3 / 31 Duty Cycle NVNT 2.4GHz 2473MHz Ant1 4 / 31 Maximum Peak Conducted Output Power Condition Mode Frequency (MHz) Antenna Conducted Power (dBm) Total Conducted Power (W) Limit Conducted(dBm) Verdict NVNT 2.4GHz 2410 Ant1 15.83 0.03828 21 Pass NVNT 2.4GHz 2441.5 Ant1 15.50 0.03548 21 Pass NVNT 2.4GHz 2473 Ant1 14.77 0.02999 21 Pass 5 / 31 Peak Power NVNT 2.4GHz 2410MHz Ant1 Peak Power NVNT 2.4GHz 2441.5MHz Ant1 6 / 31 Peak Power NVNT 2.4GHz 2473MHz Ant1 7 / 31 -20dB Bandwidth Condition Mode Frequency (MHz) Antenna -20 dB Bandwidth (MHz) Verdict NVNT 2.4GHz 2410 Ant1 4.801 Pass NVNT 2.4GHz 2441.5 Ant1 4.759 Pass NVNT 2.4GHz 2473 Ant1 4.825 Pass 8 / 31 -20dB Bandwidth NVNT 2.4GHz 2410MHz Ant1 -20dB Bandwidth NVNT 2.4GHz 2441.5MHz Ant1 9 / 31 -20dB Bandwidth NVNT 2.4GHz 2473MHz Ant1 10 / 31 Occupied Channel Bandwidth Condition Mode Frequency (MHz) Antenna 99% OBW (MHz) NVNT 2.4GHz 2410 Ant1 4.1687 NVNT 2.4GHz 2441.5 Ant1 4.1768 NVNT 2.4GHz 2473 Ant1 4.1891 11 / 31 OBW NVNT 2.4GHz 2410MHz Ant1 OBW NVNT 2.4GHz 2441.5MHz Ant1 12 / 31 OBW NVNT 2.4GHz 2473MHz Ant1 13 / 31 Carrier Frequencies Separation Condition Mode Antenna Hopping Freq1 (MHz) Hopping Freq2 (MHz) HFS (MHz) Limit (MHz) Verdict NVNT 2.4GHz Ant1 2409.97 2413.48 3.51 3.201 Pass NVNT 2.4GHz Ant1 2441.48 2445.18 3.70 3.173 Pass NVNT 2.4GHz Ant1 2469.48 2472.96 3.48 3.212 Pass 14 / 31 CFS NVNT 2.4GHz 2410MHz Ant1 CFS NVNT 2.4GHz 2441.5MHz Ant1 15 / 31 CFS NVNT 2.4GHz 2473MHz Ant1 16 / 31 Number of Hopping Channel Condition Mode Antenna Hopping Number Limit Verdict NVNT 2.4GHz Ant1 19 15 Pass 17 / 31 Hopping No. NVNT 2.4GHz 2410MHz Ant1 18 / 31 Dwell Time Condition Mode Frequency (MHz) Antenna Pulse Time (ms) Total Dwell Time (ms) Burst Count Period Time (ms) Limit (ms) Verdict NVNT 2.4GHz 2410 Ant1 3.212 208.78 65 7600 400 Pass NVNT 2.4GHz 2441.5 Ant1 3.211 205.504 64 7600 400 Pass NVNT 2.4GHz 2473 Ant1 3.21 186.18 58 7600 400 Pass 19 / 31 Dwell NVNT 2.4GHz 2410MHz Ant1 One Burst Dwell NVNT 2.4GHz 2410MHz Ant1 Accumulated 20 / 31 Dwell NVNT 2.4GHz 2441.5MHz Ant1 One Burst Dwell NVNT 2.4GHz 2441.5MHz Ant1 Accumulated 21 / 31 Dwell NVNT 2.4GHz 2473MHz Ant1 One Burst Dwell NVNT 2.4GHz 2473MHz Ant1 Accumulated 22 / 31 Band Edge Condition Mode Frequency (MHz) Antenna Hopping Mode Max Value (dBc) Limit (dBc) Verdict NVNT 2.4GHz 2410 Ant1 No-Hopping -60.14 -20 Pass NVNT 2.4GHz 2473 Ant1 No-Hopping -57.4 -20 Pass 23 / 31 Band Edge NVNT 2.4GHz 2410MHz Ant1 No-Hopping Ref Band Edge NVNT 2.4GHz 2410MHz Ant1 No-Hopping Emission 24 / 31 Band Edge NVNT 2.4GHz 2473MHz Ant1 No-Hopping Ref Band Edge NVNT 2.4GHz 2473MHz Ant1 No-Hopping Emission 25 / 31 Band Edge(Hopping) Condition Mode Frequency (MHz) Antenna Hopping Mode Max Value (dBc) Limit (dBc) Verdict NVNT 2.4GHz 2410 Ant1 Hopping -60.48 -20 Pass NVNT 2.4GHz 2473 Ant1 Hopping -59.76 -20 Pass 26 / 31 Band Edge(Hopping) NVNT 2.4GHz 2410MHz Ant1 Hopping Ref Band Edge(Hopping) NVNT 2.4GHz 2410MHz Ant1 Hopping Emission 27 / 31 Band Edge(Hopping) NVNT 2.4GHz 2473MHz Ant1 Hopping Ref Band Edge(Hopping) NVNT 2.4GHz 2473MHz Ant1 Hopping Emission 28 / 31 Conducted RF Spurious Emission Condition Mode Frequency (MHz) Antenna Max Value (dBc) Limit (dBc) Verdict NVNT 2.4GHz 2410 Ant1 -42.34 -20 Pass NVNT 2.4GHz 2441.5 Ant1 -41.24 -20 Pass NVNT 2.4GHz 2473 Ant1 -40.7 -20 Pass 29 / 31 Tx. Spurious NVNT 2.4GHz 2410MHz Ant1 Ref Tx. Spurious NVNT 2.4GHz 2410MHz Ant1 Emission 30 / 31 Tx. Spurious NVNT 2.4GHz 2441.5MHz Ant1 Ref Tx. Spurious NVNT 2.4GHz 2441.5MHz Ant1 Emission 31 / 31 Tx. Spurious NVNT 2.4GHz 2473MHz Ant1 Ref Tx. Spurious NVNT 2.4GHz 2473MHz Ant1 Emission

TRF No.: 04-E001-0B TRF Originator: GTG TRF Date: 2023-12-13 Web: www.gtggroup.com E-mail: [email protected] Tel.: 86-400 755 8988 CFR 47 FCC PART 15 SUBPART C TEST REPORT For WIRELESS REARVIEW SYSTEM MODEL NUMBER: BK-450 REPORT NUMBER: E04A26040520F00101 ISSUE DATE: June 17, 2026 FCC ID: 2A4NF-BK-450 Prepared for GUANGZHOU PJ-AUTO ELECTRONIC TECHNOLOGY LIMITED Room 602, NO.15, Zhijie, Dongping Laowu village, Yongping street, Baiyun District, Guangzhou, China Prepared by Guangdong Global Testing Technology Co., Ltd. Room 101-105, 203-210, Building 1, No.2, Keji 8 Road, Songshan Lake Park, Dongguan city, Guangdong, People’s Republic of China, 523808 This report is based on a single evaluation of the submitted sample(s) of the above mentioned product, it does not imply an assessment of the production of the products. This report shall not be reproduced, except in full, without the written approval of Guangdong Global Testing Technology Co., Ltd. REPORT NO.: E04A26040520F00101 Page 2 of 48 TRF No.: 04-E001-0B Global Testing , Great Quality. Revision History Rev. Issue Date Revisions Revised By V0 June 17, 2026 Initial Issue REPORT NO.: E04A26040520F00101 Page 3 of 48 TRF No.: 04-E001-0B Global Testing , Great Quality. Summary of Test Results Test Item Clause Limit/Requirement Result Antenna Requirement N/A FCC 15.203 RSS-GEN Clause 6.8 Pass AC Power Line Conducted Emission ANSI C63.10-2020 Clause 6.2 FCC Part 15.207 RSS-GEN Clause 8.8 Pass Conducted Output Power ANSI C63.10-2020 Clause 7.8.5 FCC 15.247 (b) (1) RSS-247 Clause 6.2.3.2 Pass 20 dB Bandwidth and 99% Occupied Bandwidth ANSI C63.10-2020 Clause 6.9.2 & 6.9.3 FCC 15.247 (a) (1) RSS-247 Clause 6.2.3.1 (a) RSS-Gen Clause 6.7 Pass Carrier Hopping Channel Separation ANSI C63.10-2020 Clause 7.8.2 FCC 15.247 (a) (1) RSS-247 Clause 6.2.3.1 (a) Pass Number of Hopping Frequency ANSI C63.10-2020 Clause 7.8.3 15.247 (a) (1) III RSS-247 Clause 6.2.3.1 (b) Pass Time of Occupancy (Dwell Time) ANSI C63.10-2020 Clause 7.8.4 15.247 (a) (1) III RSS-247 Clause 6.2.3.1 (b) Pass Conducted Bandedge and Spurious Emission ANSI C63.10-2020 Clause 6.10.4 & Clause 7.8.7 FCC 15.247 (d) RSS-247 Clause 6.6 Pass Radiated Band edge and Spurious Emission ANSI C63.10-2020 Clause 6.4 & 6.5 & 6.6 & 7.8.8 FCC 15.247 (d) FCC 15.209 FCC 15.205 RSS-247 Clause 6.6 RSS-GEN Clause 8.9 RSS-GEN Clause 8.10 Pass Duty Cycle ANSI C63.10-2020, Clause 11.6 None; for reporting purposes only. Pass Note: For ISED, this report is also performed according to ANSI C63.10-2020 + Cor.1-2023 + C63.10a-2024 + Errata to C63.10a-2024 standards. *This test report is only published to and used by the applicant, and it is not for evidence purpose in China. *The measurement result for the sample received is <Pass> according to <CFR 47 FCC PART 15 SUBPART C> when <Accuracy Method> decision rule is applied. REPORT NO.: E04A26040520F00101 Page 4 of 48 TRF No.: 04-E001-0B Global Testing , Great Quality. CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................... 5 2. TEST METHODOLOGY ......................................................................................................... 7 3. FACILITIES AND ACCREDITATION ..................................................................................... 7 4. CALIBRATION AND UNCERTAINTY ................................................................................... 8 4.1. MEASURING INSTRUMENT CALIBRATION ........................................................... 8 4.2. MEASUREMENT UNCERTAINTY ............................................................................ 8 5. EQUIPMENT UNDER TEST .................................................................................................. 9 5.1. DESCRIPTION OF EUT ........................................................................................... 9 5.2. CHANNEL LIST ...................................................................................................... 10 5.3. MAXIMUM CONDUCTED OUTPUT POWER ......................................................... 10 5.4. TEST CHANNEL CONFIGURATION ...................................................................... 10 5.5. THE WORSE CASE POWER SETTING PARAMETER .......................................... 10 5.6. DESCRIPTION OF AVAILABLE ANTENNAS ......................................................... 11 5.7. SUPPORT UNITS FOR SYSTEM TEST ................................................................. 11 5.8. SETUP DIAGRAM .................................................................................................. 11 6. MEASURING EQUIPMENT AND SOFTWARE USED......................................................... 12 7. ANTENNA PORT TEST RESULTS ..................................................................................... 14 7.1. Conducted Output Power ........................................................................................ 14 7.2. 20 dB Bandwidth and 99% Occupied Bandwidth..................................................... 15 7.3. Carrier Hopping Channel Separation ...................................................................... 16 7.4. Number of Hopping Frequency ............................................................................... 18 7.5. Time of Occupancy (Dwell Time) ............................................................................ 19 7.6. Conducted Bandedge and Spurious Emission ........................................................ 21 7.7. Duty Cycle .............................................................................................................. 23 8. RADIATED TEST RESULTS ............................................................................................... 24 8.1. Radiated Band edge and Spurious Emission .......................................................... 31 9. ANTENNA REQUIREMENT ...........................................................................................…

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BK-450 板载天线规格书 1 BK-450板载天线规格书 BK-450 板载天线规格书 2 一、概述 该PCB天线是根据BK-450的尺寸设计的板载天线。 图1：BK-450板载天线位置及效果图 二、基本参数： 参数 指标 备注 频段Frequency Range(MHz) 2400-2500 增益 Gain(dBi) 0 dBi ±1 dBi 驻波比 V.S.W.R. ＜1.5 极化 Polarization Vertical 不圆度Non-Circularity(dB) ±0.5 输入阻抗 Impedance(Ω) 50 雷电保护 Lightning Protection Direct Ground 最大功率 Maximum Input Power(W) 50 工作温度 Operating Temperature(°C) -40~+70 储藏温度 Reposition Temperature(°C) -55~+80 表1：基本参数 450 TX 450 RX BK-450 板载天线规格书 3 三、回波损耗（S11/VSWR） 2.4GHz 2.45GHz 2.5GHz S11（dB） -10.1 -28 -10.7 VSWR 1.9 1.1 1.9 BK-450 板载天线规格书 4 四、辐射模式（2.45GHz） X-Y plane X-Y plane X-Y plane Avg gain(dBi) -3.5 -0.36 -1.76 Peak gain(dBi) 0.08 0.51 0.46

Setup Photographs Radiated Band edge and Spurious Emission AC Power Line Conducted Emission