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Annex A External Photos Report No.: HK2106171918‐E Page 1 of 4 Report No.: HK2106171918‐E Page 2 of 4 Report No.: HK2106171918‐E Page 3 of 4 Report No.: HK2106171918‐E Page 4 of 4

FCC ID LABEL: Label Location FCC ID: 2A2JG-C500S

Annex B Internal Photo Report No.:HK2106171918-E Page 1 of 2 Antenna Report No.:HK2106171918-E Page 2 of 2

MPE ESTIMATION FCC ID: 2A2JG-C500S 1,Limit for General Population/ Uncontrolled Exposures Frequency Power density (mW/ cm 2 ) Averaging time(minutes) 300MHz----1.5GHz F/1500 30 1.5GHz---100GHz 1.0 30 Note: F= Frequency in MHz 2, Estimation Result WIFI Mode Max PK Output power(dBm) Tune Up Power(dBm) Max Tune Up power(mW) Antenna Gain(dBi) Antenna Gain (numerical) MPE ( mW/cm²) 2.4G WIFI 13.78 13±1(14) 25.119 3.77 2.3823 0.01191 Note: Note: The estimation distance is 20cm Note: PK Output power= conducted power. Conducted power see the test report HK2106171918-E, antenna gain=3.77dBi when the minimum test separation distance is >20 cm, a distance of 20 cm is applied to determine RF Exposure test exclusion. The test exclusion threshold is 0.01191 mW/cm² which is< 1.0mW/cm², RF Exposure testing is not required. -------The End-------

Page 1 of 60Report No.: HK2106171918-E FCC TEST REPORT Test report On Behalf of Beijing yuanyibai Technology Co., Ltd. For DESGEO Smart Bottom Filter Amphibious Ecological Fish Tank Model No.: C500-S FCC ID: 2A2JG-C500S Prepared For : Beijing yuanyibai Technology Co., Ltd. No. 1-549, Lianhang Building, East of Chaichang Tun Village, Yongledian Town, Tongzhou District, Beijing, 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: Jun. 17, 2021 ~ July. 08, 2021 Date of Report: July. 08, 2021 Report Number: HK2106171918-E Applican Address Manufa c Address Product Trade M a Product n Model an Standard This pub the She n source o and will reprodu c Date of T Date (s) o Date of Is Te s t R e s nt’s name .. .................. cture's Nam .................. descripti o ark: name .......... nd/or type re ds .............. lication ma y nzhen HUA f the mater not assu m ced materia Test ............ of performa ssue .......... ult .............. Te s Te c Aut TES ................ : ................ : me ............ : ................ : on ................... : eference : ................ : y be reprod AK Testing ial. Shenzh me liability l due to its p .................. ance of tests .................. .................. sting Engine chnical Man thorized Sig ST RESU Beijing yu No. 1-54 9 Yongledia Beijing y u No. 1-54 9 Yongledia 画法几何 / DESGEO C500-S FCC Rul e ANSI C63 duced in wh Te c h n o l o gy en HUAK T for damag placement a .............. : s ............. : .............. : .............. : eer : nager : gnatory : Page 2 of ULT CER uanyibai Tec 9, Lianhang an Town, To uanyibai Tec 9, Lianhang an Town, To /DESGEO O Smart Bot es and Regu 3.10: 2013 hole or in pa y Co., Ltd. Testing Tech ges resultin and context Jun. 17, 2 0 July. 08, 2 Pass 60 RTIFICAT chnology Co Building, E ongzhou Dis chnology Co Building, E ongzhou Dis tom Filter A ulations Par art for non-c is acknowl hnology Co ng from the t. 021 ~ July. 021 (Gary Qi a (Eden H u (Jason Zh o Repor TION o., Ltd. East of Chai strict, Beijing o., Ltd. East of Chai strict, Beijing Amphibious rt 15 Subpar commercial ledged as ., Ltd. take s e reader's 08, 2021 an) u) ou) rt No.: HK210 ichang Tun g, China ichang Tun g, China Ecological rt C Section purposes a copyright o s no respon interpretati 06171918-E Village, Village, Fish Tank n 15.247 as long as owner and nsibility for on of the Page 3 of 60 Report No.: HK2106171918-E TABLE OF CONTENTS 1. TEST RESULT SUMMARY ........................................................................ 5 1.1. TEST PROCEDURES AND RESULTS ............................................................................................... 5 1.2. TEST FACILITY .................................................................................................................................. 5 1.3. MEASUREMENT UNCERTAINTY ..................................................................................................... 6 2. EUT DESCRIPTION ................................................................................... 7 2.1. GENERAL DESCRIPTION OF EUT ................................................................................................... 7 2.2. CARRIER FREQUENCY OF CHANNELS .......................................................................................... 8 2.3. OPERATION OF EUT DURING TESTING .......................................................................................... 8 2.4. DESCRIPTION OF TEST SETUP ....................................................................................................... 9 3. GENERA INFORMATION ........................................................................ 10 3.1. TEST ENVIRONMENT AND MODE ................................................................................................. 10 3.2. DESCRIPTION OF SUPPORT UNITS .............................................................................................. 11 4. TEST RESULTS AND MEASUREMENT DATA ...................................... 12 4.1. CONDUCTED EMISSION ................................................................................................................. 12 4.2. TEST RESULT .................................................................................................................................. 14 4.3. MAXIMUM CONDUCTED OUTPUT POWER ................................................................................... 16 4.4. EMISSION BANDWIDTH .................................................................................................................. 18 4.5. POWER SPECTRAL DENSITY ........................................................................................................ 23 4.6. CONDUCTED BAND EDGE AND SPURIOUS EMISSION MEASUREMENT ................................. 28 4.7. RADIATED SPURIOUS EMISSION MEASUREMENT .................................................................... 35 5. ANTENNA REQUIREMENT ..................................................................... 57 6. PHOTOGRAPH OF TEST ........................................................................ 58 7. PHOTOS OF THE EUT ............................................................................ 60 Page 4 of 60 Report No.: HK2106171918-E ** Modified History ** Revision Description Issued Data Remark Revision 1.0 Initial Test Report Release July. 08, 2021 Jason Zhou Page 5 of 60 Report No.: HK2106171918-E 1. TEST RESULT SUMMARY 1.1. TEST PROCEDURES AND RESULTS Requirement CFR 47 Section Result Antenna requirement §15.203/§15.247(b)(4) PASS AC Power Line Conducted Emission §15.207 PASS Conducted Peak Output Power §15.247(b)(3) PASS 6dB Emission Bandwidth §15.247(a)(2) PASS Power Spectral Density §15.247(e) PASS Band Edge §15.247(d) PASS Spurious Emission §15.205/§15.209 PASS Note: 1. PASS: Test item meets the requi…

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Radiated Emissions Conducted Emission