2ACP4LBT975Bluetooth Earphone

Report No.: AGC00806220301AP02 Page 1 of 10 EXTERNAL PHOTOS All VIEW OF EUT Left TOP VIEW OF EUT Report No.: AGC00806220301AP02 Page 2 of 10 BOTTOM VIEW OF EUT FRONT VIEW OF EUT Report No.: AGC00806220301AP02 Page 3 of 10 BACK VIEW OF EUT LEFT VIEW OF EUT Report No.: AGC00806220301AP02 Page 4 of 10 RIGHT VIEW OF EUT Right TOP VIEW OF EUT Report No.: AGC00806220301AP02 Page 5 of 10 BOTTOM VIEW OF EUT FRONT VIEW OF EUT Report No.: AGC00806220301AP02 Page 6 of 10 BACK VIEW OF EUT LEFT VIEW OF EUT Report No.: AGC00806220301AP02 Page 7 of 10 RIGHT VIEW OF EUT Charging Dock TOP VIEW OF EUT Report No.: AGC00806220301AP02 Page 8 of 10 BOTTOM VIEW OF EUT FRONT VIEW OF EUT Report No.: AGC00806220301AP02 Page 9 of 10 BACK VIEW OF EUT LEFT VIEW OF EUT Report No.: AGC00806220301AP02 Page 10 of 10 RIGHT VIEW OF EUT ****************************************End of Report****************************************

FCC ID Label Location The product does not have enough space to place the label, and FCC ID label is reflected in the user manual and package, as below:

Report No.: AGC00806220301AP02 Page 1 of 8 INTERNAL PHOTOS Left OPEN VIEW OF EUT (FIGURE 1) OPEN VIEW OF EUT (FIGURE 2) Report No.: AGC00806220301AP02 Page 2 of 8 ANTENNA CLOSE-UP PHOTO-1 INTERNAL VIEW OF EUT (FIGURE 1) Antenna Report No.: AGC00806220301AP02 Page 3 of 8 INTERNAL VIEW OF EUT (FIGURE 2) INTERNAL VIEW OF EUT (FIGURE 3) Report No.: AGC00806220301AP02 Page 4 of 8 INTERNAL VIEW OF EUT (FIGURE 4) Right OPEN VIEW OF EUT (FIGURE 1) Report No.: AGC00806220301AP02 Page 5 of 8 OPEN VIEW OF EUT (FIGURE 2) ANTENNA CLOSE-UP PHOTO-1 Antenna Report No.: AGC00806220301AP02 Page 6 of 8 VIEW OF BATTERY INTERNAL VIEW OF EUT (FIGURE 1) Report No.: AGC00806220301AP02 Page 7 of 8 INTERNAL VIEW OF EUT (FIGURE 2) INTERNAL VIEW OF EUT (FIGURE 3) Report No.: AGC00806220301AP02 Page 8 of 8 INTERNAL VIEW OF EUT (FIGURE 4) ****************************************End of Report****************************************

Page 1 of 67 FCC Test Report Report No.: AGC00806220301FE03 FCC ID : 2ACP4LBT975 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Bluetooth Earphone BRAND NAME : SENTRY MODEL NAME : BT975, BT975B, BT975W, BT975DG, BT980, BT984, BT985, BT980W, BT980B APPLICANT : Sentry Industries Limited DATE OF ISSUE : Mar. 21, 2022 STANDARD(S) : FCC Part 15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC00806220301FE03 Page 2 of 67 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Mar. 21, 2022 Valid Initial Release Report No.: AGC00806220301FE03 Page 3 of 67 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. RECEIVER INPUT BANDWIDTH .............................................................................................................. 7 2.4. EXAMPLE OF A HOPPING SEQUENCY IN DATA MODE ......................................................................... 7 2.5. EQUALLY AVERAGE USE OF FREQUENCIES AND BEHAVIOUR ......................................................... 7 2.6. RELATED SUBMITTAL(S) / GRANT (S) .................................................................................................... 8 2.7. TEST METHODOLOGY ............................................................................................................................. 8 2.8. SPECIAL ACCESSORIES ......................................................................................................................... 8 2.9. EQUIPMENT MODIFICATIONS ................................................................................................................. 8 2.10. ANTENNA REQUIREMENT..................................................................................................................... 8 3. MEASUREMENT UNCERTAINTY ................................................................................................................... 9 4. DESCRIPTION OF TEST MODES ................................................................................................................. 10 5. SYSTEM TEST CONFIGURATION ................................................................................................................ 11 5.1. CONFIGURATION OF EUT SYSTEM ...................................................................................................... 11 5.2. EQUIPMENT USED IN TESTED SYSTEM .............................................................................................. 11 5.3. SUMMARY OF TEST RESULTS .............................................................................................................. 11 6. TEST FACILITY .............................................................................................................................................. 12 7. PEAK OUTPUT POWER ................................................................................................................................ 13 7.1. MEASUREMENT PROCEDURE ............................................................................................................. 13 7.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 13 7.3. LIMITS AND MEASUREMENT RESULT .................................................................................................. 14 8. 20DB BANDWIDTH ........................................................................................................................................ 19 8.1. MEASUREMENT PROCEDURE ............................................................................................................. 19 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 19 8.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................... 20 9. CONDUCTED SPURIOUS EMISSION........................................................................................................... 25 9.1. MEASUREMENT PROCEDURE ............................................................................................................. 25 Report No.: AGC00806220301FE03 Page 4 of 67 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 25 9.3. MEASUREMENT EQUIPMENT USED .................................................................................................... 25 9.4. LIMITS AND MEASUREMENT RESULT .................................................................................................. 25 10. RADIATED EMISSION ................................................................................................................................. 46 10.1. MEASUREMENT PROCEDURE ........................................................................................................... 46 10.2. TEST SETUP ......................................................................................................................................... 48 10.3. LIMITS AND MEASUREMENT RESULT ............................................................................................... 49 10.4. TEST RESULT........................................................................................................................................ 49 11. NUMBER OF HOPPING FREQUENCY ..................…

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Report No.: AGC00806220301FE03 Page 39 of 67 Test_Graph_EDR_ANT1_2480_3Mbps_Higher Band Emissions Report No.: AGC00806220301FE03 Page 40 of 67 Test Graphs of Band Edge Emissions in Non-Restricted Frequency Bands Test_Graph_BR_ANT1_2402_1Mbps_Lower Band Edge Emissions Test_Graph_BR_ANT1_2480_1Mbps_Higher Band Edge Emissions Report No.: AGC00806220301FE03 Page 41 of 67 Test_Graph_BR_HOP_ANT1_NA_1Mbps_Lower Band Edge Emissions Test_Graph_BR_HOP_ANT1_NA_1Mbps_Higher Band Edge Emissions Report No.: AGC00806220301FE03 Page 42 of 67 Test_Graph_EDR_ANT1_2402_2Mbps_Lower Band Edge Emissions Test_Graph_EDR_ANT1_2480_2Mbps_Higher Band Edge Emissions Report No.: AGC00806220301FE03 Page 43 of 67 Test_Graph_EDR_HOP_ANT1_NA_2Mbps_Lower Band Edge Emissions Test_Graph_EDR_HOP_ANT1_NA_2Mbps_Higher Band Edge Emissions Report No.: AGC00806220301FE03 Page 44 of 67 Test_Graph_EDR_ANT1_2402_3Mbps_Lower Band Edge Emissions Test_Graph_EDR_ANT1_2480_3Mbps_Higher Band Edge Emissions Report No.: AGC00806220301FE03 Page 45 of 67 Test_Graph_EDR_HOP_ANT1_NA_3Mbps_Lower Band Edge Emissions Test_Graph_EDR_HOP_ANT1_NA_3Mbps_Higher Band Edge Emissions Report No.: AGC00806220301FE03 Page 46 of 67 10. RADIATED EMISSION 10.1. MEASUREMENT PROCEDURE 1. The EUT was placed on the top of the turntable 0.8 or 1.5 meter above ground. The phase center of the receiving antenna mounted on the top of a height-variable antenna tower was placed 3 meters far away from the turntable. 2. Power on the EUT and all the supporting units. The turntable was rotated by 360 degrees to determine the position of the highest radiation. 3. The height of the broadband receiving antenna was varied between one meter and four meters above ground to find the maximum emissions field strength of both horizontal and vertical polarization. 4. For each suspected emission, the antenna tower was scan (from 1 M to 4 M) and then the turntable was rotated (from 0 degree to 360 degrees) to find the maximum reading. 5. Set the test-receiver system to Peak or CISPR quasi-peak Detect Function with specified bandwidth under Maximum Hold Mode. 6. For emissions above 1GHz, use 1MHz RBW and 3MHz VBW for peak reading. Place the measurement antenna away from each area of the EUT determined to be a source of emissions at the specified measurement distance, while keeping the measurement antenna aimed at the source of emissions at each frequency of significant emissions, with polarization oriented for maximum response. The measurement antenna may have to be higher or lower than the EUT, depending on the radiation pattern of the emission and staying aimed at the emission source for receiving the maximum signal. The final measurement antenna elevation shall be that which maximizes the emissions. The measurement antenna elevation for maximum emissions shall be restricted to a range of heights of from 1 m to 4 m above the ground or reference ground plane. 7. When the radiated emissions limits are expressed in terms of the average value of the emissions, and pulsed operation is employed, the measurement field strength shall be determined by averaging over one complete pulse train, including blanking intervals, as long as the pulse train does not exceed 0.1 seconds. As an alternative (provided the transmitter operates for longer than 0.1 seconds) or in cases where the pulse train exceeds 0.1 seconds, the measured field strength shall be determined from the average absolute voltage during a 0.1 second interval during which the field strength is at its maximum values. 8.If the emissions level of the EUT in peak mode was 3 dB lower than the average limit specified, then testing will be stopped and peak values of EUT will be reported, otherwise, the emissions which do not have 3 dB margin will be repeated one by one using the quasi-peak method for below 1GHz. 9. For testing above 1GHz, the emissions level of the EUT in peak mode was lower than average limit (that means the emissions level in peak mode also complies with the limit in average mode), then testing will be stopped and peak values of EUT will be reported, otherwise, the emissions will be measured in average mode again and reported. 10. In case the emission is lower than 30MHz, loop antenna has to be used for measurement and the recorded data should be QP measured by receiver. High - Low scan is not required in this case. Report No.: AGC00806220301FE03 Page 47 of 67 The following table is the setting of spectrum analyzer and receiver. Spectrum Parameter Setting Start ~Stop Frequency 9KHz~150KHz/RB 200Hz for QP Start ~Stop Frequency 150KHz~30MHz/RB 9KHz for QP Start ~Stop Frequency 30MHz~1000MHz/RB 120KHz for QP Start ~Stop Frequency 1GHz~26.5GHz 1MHz/3MHz for Peak, 1MHz/3MHz for Average Receiver Parameter Setting Start ~Stop Frequency 9KHz~150KHz/RB 200Hz for QP Start ~Stop Frequency 150KHz~30MHz/RB 9KHz for QP Start ~Stop Frequency 30MHz~1000MHz/RB 120KHz for QP Report No.: AGC00806220301FE03 Page 48 of 67 10.2. TEST SETUP Radiated Emission Test-Setup Frequency Below 30MHz RADIATED EMISSION TEST SETUP 30MHz-1000MHz RADIATED EMISSION TEST SETUP ABOVE 1000MHz Report No.: AGC00806220301FE03 Page 49 of 67 10.3. LIMITS AND MEASUREMENT RESULT 15.209 Limit in the below table has to be followed Frequencies (MHz) Field Strength (microvolts/meter) Measurement Distance (meters) 0.009~0.490 2400/F(kHz) 300 0.490~1.705 24000/F(kHz) 30 1.705~30.0 30 30 30~88 100 3 88~216 150 3 216~960 200 3 Above 960 500 3 Note: All modes were tested for restricted band radiated emission, the test records reported below are the worst result compared to other modes. 10.4. TEST RESULT Radiated emission below 30MHz The amplitude of spurious emissions from 9kHz to 30MHz which are attenuated more than 20 dB below the permissible value need not be reported. Report No.: AGC00806220301FE03 Page 50 of 67 Radiated emission from 30MHz to 1000MHz EUT Bluetooth Earphone Model Name BT975 Temperature 25°C Relative Humidity 55% Pressure 960hPa Test Voltage Normal Voltage Tes…

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Report No.: AGC00806220301AP01 Page 1 of 2 TEST SETUP PHOTOS RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC00806220301AP01 Page 2 of 2 RF CONDUCTED TEST SETUP ****************************************End of Report*************************************