2AJFX-A2DDPai

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Dec. 31, 2019 Federal Communications Commission 445 12 th Street SW Washington, DC 20554 Subject: Limited Agency Agreement DDPAI Technology Co., Ltd FCC ID: 2AJFX-A2 To Whom It May Concern: We, DDPAI Technology Co., Ltd hereby authorized Intertek Testing Services to act as our Agent for the purpose of preparing application for FCC ID number (2AJFX-A2) under all applicable parts of the FCC rules and regulations. The effective date of this limited agency agreement is (2019-12-31). The Limited Agency Agreement expires until further notice, unless sooner terminated or extended by written notice to Intertek Testing Services and the Federal Communications Commission. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. The applicant is not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 U.S.C. 862, and no party to the application is subject to a denial of federal benefits pursuant to that section. If you have any questions or comments, please do not hesitate to contact me. Sincerely, [Signature] DDPAI Technology Co., Ltd Contact person: Victor Song

External Photos ALL VIEW OF EUT TOP VIEW OF EUT BOTTOM VIEW OF EUT FRONT VIEW OF EUT BACK VIEW OF EUT LEFT VIEW OF EUT RIGHT VIEW OF EUT

FCC ID Label Location 8mm*14mm FCC ID: 2AJFX-A2

Internal Photos OPEN VIEW OF EUT-1 WIFI Antenna OPEN VIEW OF EUT-2 VIEW OF ANTENNA INTERNAL VIEW OF EUT-1 INTERNAL VIEW OF EUT-2 INTERNAL VIEW OF EUT-3 INTERNAL VIEW OF EUT-4 INTERNAL VIEW OF EUT-5 INTERNAL VIEW OF EUT-6 INTERNAL VIEW OF EUT-7 INTERNAL VIEW OF EUT-8

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION Product Description DDPai Model Name A2 FCC ID 2AJFX-A2 2. EVALUATION METHOD AND LIMIT Human exposure to RF emissions from mobile devices (47 CFR §2.1091) may be evaluated based on the MPE limits adopted by the FCC for electric and magnetic field strength and/or power density, as appropriate, since exposures are assumed to occur at distances of 20 cm or more from persons. LIMITS FOR GENERAL POPULATION / UNCONTROLLED EXPOSURE Frequency Range (MHz) E-field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Time |E| 2 , |H| 2 or S (Minutes) 0.3 -- 1.34 614 1.63 (100)* 30 1.34 -- 30 824/f 2.19/f (180/f 2 )* 30 30 -- 300 27.5 0.073 0.2 30 300 -- 1500 -- -- f/1500 30 1500 -- 100,000 -- -- 1.0 30 *Note: 1. f= Frequency in MHz * Plane-wave Equivalent Power Density 2. The averaging time for General Population/Uncontrolled exposure to fixed transmitters is not applicable for mobile and portable transmitters. See 47 CFR §§2.1091 and 2.1093 on source-based time-averaging requirement for mobile and portable transmitters. S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna CALCULATION A minimum test separation distance ≥ 20 cm is required between the antenna and radiating structures of the device and nearby persons to apply mobile device exposure limits. The distance must be at least 20 cm and fully supported by the operating and installation configurations of the transmitter and its antenna(s), according to the source-based time-averaged maximum power requirements of § 2.1091(d)(2). In cases where cable losses or other attenuations are applied to determine compliance, the most conservative operating configurations and exposure conditions must be evaluated. Antenna Gain=2.3dBi (Numeric 1.70), π=3.14 Note: 1. Only the worst case recorded. Frequency Output Power Output Power Power Density Power Density Limit MHz dBm mW mW/cm 2 mW/cm 2 2462 16.53 44.98 0.0152 1

Page 1 of 85 Report No.: AGC05414191102FE05 FCC ID : 2AJFX-A2 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : DDPai BRAND NAME : ddpai MODEL NAME : A2 APPLICANT : DDPAI Technology Co., Ltd DATE OF ISSUE : Dec. 31, 2019 STANDARD(S) TEST PROCEDURE(S) : FCC Part 15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd CAUTION: This report shall not be reproduced except in full without the written permission of the test laboratory and shall not be quoted out of context. FCC Test Report Report No.: AGC05414191102FE05 Page 2 of 85 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Dec. 31, 2019 Valid Initial Release Report No.: AGC05414191102FE05 Page 3 of 85 TABLE OF CONTENTS 1. VERIFICATION OF CONFORMITY ............................................................................................................... 5 2. GENERAL INFORMATION ............................................................................................................................ 6 2.1. PRODUCT DESCRIPTION ..................................................................................................................... 6 2.2. TABLE OF CARRIER FREQUENCYS ..................................................................................................... 6 2.3. IEEE 802.11N MODULATION SCHEME .................................................................................................. 7 2.4. RELATED SUBMITTAL(S) / GRANT (S) .................................................................................................. 7 2.5. TEST METHODOLOGY .......................................................................................................................... 7 2.6. SPECIAL ACCESSORIES ....................................................................................................................... 7 2.7. EQUIPMENT MODIFICATIONS .............................................................................................................. 7 3. MEASUREMENT UNCERTAINTY ................................................................................................................. 8 4. DESCRIPTION OF TEST MODES ................................................................................................................. 9 5. SYSTEM TEST CONFIGURATION ............................................................................................................. 10 5.1. CONFIGURATION OF EUT SYSTEM ................................................................................................... 10 5.2. EQUIPMENT USED IN EUT SYSTEM ................................................................................................... 10 5.3. SUMMARY OF TEST RESULTS ............................................................................................................ 10 6. TEST FACILITY ........................................................................................................................................... 11 7. OUTPUT POWER ........................................................................................................................................ 12 7.1. MEASUREMENT PROCEDURE ........................................................................................................... 12 7.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................... 12 7.3. LIMITS AND MEASUREMENT RESULT ............................................................................................... 13 8. 6 DB BANDWIDTH ...................................................................................................................................... 15 8.1. MEASUREMENT PROCEDURE ........................................................................................................... 15 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................... 15 8.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................. 16 9. CONDUCTED SPURIOUS EMISSION ........................................................................................................ 24 9.1. MEASUREMENT PROCEDURE ........................................................................................................... 24 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................... 24 9.3. MEASUREMENT EQUIPMENT USEDJN ............................................................................................. 24 9.4. LIMITS AND MEASUREMENT RESULT ............................................................................................... 24 10. MAXIMUM CONDUCTED OUTPUT POWER SPECTRAL DENSITY ....................................................... 43 10.1 MEASUREMENT PROCEDURE .......................................................................................................... 43 10.2 TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................. 43 10.3 MEASUREMENT EQUIPMENT USED ................................................................................................. 43 10.4 LIMITS AND MEASUREMENT RESULT .............................................................................................. 43 11. RADIATED EMISSION ............................................................................................................................... 51 Report No.: AGC05414191102FE05 Page 4 of 85 11.1. MEASUREMENT PROCEDURE ......................................................................................................... 51 11.2. TEST SETUP ....................................................................................................................................... 52 11.3. LIMITS AND MEASUREMENT RESULT ................................…

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Report No.: AGC05414191102FE05 Page 59 of 85 12. BAND EDGE EMISSION 12.1. MEASUREMENT PROCEDURE Radiated restricted band edge measurements The radiated restricted band edge measurements are measured with an EMI test receiver connected to the receive antenna while the EUT is transmitting 12.2. TEST SET-UP same as 11.2 Note: 1. Factor=Antenna Factor + Cable loss - Amplifier gain. Field Strength=Factor + Reading level 2. The factor had been edited in the “Input Correction” of the Spectrum Analyzer. So the Amplitude of test plots is equal to Reading level plus the Factor in dB. Use the A dB(μV) to represent the Amplitude. Use the F dB(μV/m) to represent the Field Strength. So A=F. Report No.: AGC05414191102FE05 Page 60 of 85 12.3. TEST RESULT EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11b with data rate 1 2412MHZ Antenna Horizontal PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 61 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11b with data rate 1 2412MHZ Antenna Vertical PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 62 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11b with data rate 1 2462MHZ Antenna Horizontal PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 63 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11b with data rate 1 2462MHZ Antenna Vertical PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 64 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11g with data rate 6 2412MHZ Antenna Horizontal PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 65 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11g with data rate 6 2412MHZ Antenna Vertical PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 66 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11g with data rate 6 2462MHZ Antenna Horizontal PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 67 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11g with data rate 6 2462MHZ Antenna Vertical PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 68 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11n 20 with data rate 6.5 2412MHZ Antenna Horizontal PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 69 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11n 20 with data rate 6.5 2412MHZ Antenna Vertical PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 70 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11n 20 with data rate 6.5 2462MHZ Antenna Horizontal PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 71 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11n 20 with data rate 6.5 2462MHZ Antenna Vertical PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 72 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11n 40 with data rate 13.5 2422MHZ Antenna Horizontal PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 73 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11n 40 with data rate 13.5 2422MHZ Antenna Vertical PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 74 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11n 40with data rate 13.5 2452MHZ Antenna Horizontal PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 75 of 85 EUT DDPai Model Name A2 Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode 802.11n 40 with data rate 13.5 2452MHZ Antenna Vertical PK AV RESULT: PASS Report No.: AGC05414191102FE05 Page 76 of 85 APPENDIX A: PHOTOGRAPHS OF TEST SETUP FCC RADIATED EMISSION TEST SETUP BELOW 1GHZ FCC RADIATED EMISSION TEST SETUP ABOVE 1GHZ Report No.: AGC05414191102FE05 Page 77 of 85 APPENDIX B: PHOTOGRAPHS OF EUT ALL VIEW OF EUT TOP VIEW OF EUT Report No.: AGC05414191102FE05 Page 78 of 85 BOTTOM VIEW OF EUT FRONT VIEW OF EUT Report No.: AGC05414191102FE05 Page 79 of 85 BACK VIEW OF EUT LEFT VIEW OF EUT Report No.: AGC05414191102FE05 Page 80 of 85 RIGHT VIEW OF EUT OPEN VIEW OF EUT-1 WIFI Antenna Report No.: AGC05414191102FE05 Page 81 of 85 OPEN VIEW OF EUT-2 VIEW OF ANTENNA Report No.: AGC05414191102FE05 Page 82 of 85 INTERNAL VIEW OF EUT-1 INTERNAL VIEW OF EUT-2 Report No.: AGC05414191102FE05 Page 83 of 85 INTERNAL VIEW OF EUT-3 INTERNAL VIEW OF EUT-4 Report No.: AGC05414191102FE05 Page 84 of 85 INTERNAL VIEW OF EUT-5 INTERNAL VIEW OF EUT-6 Report No.: AGC05414191102FE05 Page 85 of 85 INTERNAL VIEW OF EUT-7 INTERNAL VIEW OF EUT-8 ----END OF REPORT----

Test Setup Photos FCC RADIATED EMISSION TEST SETUP BELOW 1GHZ FCC RADIATED EMISSION TEST SETUP ABOVE 1GHZ