2AN3WSTAMPS3M5StampS3

M5STACK- STAMPS3 2022 V0.01 2 TABLE OF CONTENTS 1. OUTLINE .................................................................................. 3 1.1 HARDWARE COMPOSITION ......................................................... 3 2. PIN DESCRIPTION ...................................................................... 4 2.1. USB INTERFACE ...................................................................... 4 2.2. GPIO INTERFACE ..................................................................... 4 3. FUNCTIONAL DESCRIPTION ......................................................... 5 3.1. CPU AND MEMORY .................................................................. 5 3.2. STORAGE DESCRIPTION .............................................................. 5 3.2.1. External Flash and RAM ................................................... 5 3.3. CPU CLOCK .......................................................................... 5 3.4. RTC AND LOWPOWER MANAGEMENT ............................................. 6 4. ELECTRICAL CHARACTERISTICS .................................................... 7 4.1. ABSOLUTE MAXIMUM RATINGS ..................................................... 7 4.2. WIFI RADIO AND BASEBAND ........................................................ 7 4.3. BLUETOOTH LE RF TRANSMITTER (TX) SPECIFICATIONS ..................... 8 4.4. BLUETOOTH LE RF RECEIVER (RX) SPECIFICATIONS .......................... 8 3 1.Outline StampS3 is a development board based on the ESP32-S3 chip. The board is equipped with a button and USB-C port, as well as WS2812LED and 2.4g antenna. 1.1 Hardware Composition StampS3 hardware :ESP32-S3 chip, color LED, buttons, MUN3CAD01-SC DCDC. The Esp32-s3 is a single chip with integrated 2.4ghz Wi-Fi and Bluetooth 5 (LE) in Long Range mode. The Esp32-s3 uses an Xtensa® 32-bit LX7 dual-core processor with a maximum of 240mhz, 512KB of TCM (SRAM) built in, 45 programmable GPIO pins, and rich communication interfaces. Esp32-s3 supports higher capacity octal SPI Flash and off-chip RAM, and supports user-configured data caching and instruction caching. The power management chip is Cyntec MUN3CAD01-SC. Operating voltage range 2.7V~5.5V, supply current 1A. StampS3 comes with everything you need to program ESP32, everything you need to do and develop 4 2. PIN DESCRIPTION 2.1. USB INTERFACE StampS3 is configured with type-c USB interface and supports THE USB2.0 standard communication protocol。 2.2. GPIO INTERFACE StampS3 is equipped with 28p stamp hole pad, in which pins 11 and 18 are connected to GND, and pin 13 has a voltage of 5V, which can supply power to the development board or other devices when connecting external USB. Pin 28 is 3.3V output of the development board, and other pins are GPIO interface. 5 3. FUNCTIONAL DESCRIPTION This chapter describes the ESP32-S3 various modules and functions. 3.1. CPU AND MEMORY Xtensa® dual-core 32-bit LX7 microprocessor,up to 240 MHz  384 KB ROM  512 KB SRAM  16 KB SRAM in RTC  SPI, Dual SPI, Quad SPI, Octal SPI, QPI and OPI interfaces that allow connection to multiple flash and external RAM  Flash controller with cache is supported  Flash in-Circuit Programming (ICP) is supported 3.2. STORAGE DESCRIPTION 3.2.1. External Flash and RAM ESP32-S3 supports SPI, Dual SPI, Quad SPI, Octal SPI, QPI and OPI interfaces that allow connection to multiple external flash and RAM. The external flash and RAM can be mapped into the CPU instruction memory space and read-only data memory space. The external RAM can also be mapped into the CPU data memory space. ESP32-S3 supports up to 1GB of external flash and RAM, and hardware encryption/decryption based on XTS-AES to protect users’programs and data in flash and external RAM. Through high-speed caches, ESP32-S3 can support at a time up to:  External flash or RAM mapped into 32 MB instruction space as individual blocks of 64 KB  External RAM mapped into 32 MB data space as individual blocks of 64 KB. 8-bit, 16-bit, 32-bit, and 128-bit reads and writes are supported. External flash can also be mapped into 32 MB data space as individual blocks of 64 KB, but only supporting 8-bit, 16-bit, 32- bit and 128-bit reads. 3.3. CPU CLOCK The CPU clock has three possible sources: 6  External main crystal clock  Internal fast RC oscillator (typically about 17.5 MHz, and adjustable)  PLL clock The application can select the clock source from the three clocks above. The selected clock source drives the CPU clock directly, or after division, depending on the application. Once the CPU is reset, the default clock source would be the external main crystal clock divided by 2. 3.4. RTC AND LOWPOWER MANAGEMENT With the use of advanced power-management technologies, ESP32-S3 can switch between different power modes. (see table1)。  Active mode: CPU and chip radio are powered on. The chip can receive, transmit, or listen.  Modemsleep mode: The CPU is operational and the clock speed can be reduced. The wireless baseband and radio are disabled, but wireless connection can remain active.  Lightsleep mode: The CPU is paused. The RTC peripherals, as well as the ULP coprocessor can be woken up periodically by the timer. Any wake-up events (MAC, host, RTC timer, or external interrupts) will wake up the chip. Wireless connection can remain active. Users can optionally decide what peripherals to shut down/keep on (refer to Figure 1), for power-saving purpose.  Deepsleep mode: CPU and most peripherals are powered down. Only the RTC memory is powered on and RTC peripherals are optional. Wi-Fi connection data are stored in the RTC memory. The ULP coprocessor is functional. Current Consumption in LowPower Modes: TABLE 1 7 4. ELECTRICAL CHARACTERISTICS 4.1. ABSOLUTE MAXIMUM RATINGS Table 2: Absolute Maximum Ratings 1. V IO to the power supply pad, Refer ESP32 Technical Specification Appendix IO_MUX, as SD_CLK of Power supply for VDD_SDIO. 4.2. WIFI RADIO AND BASEBAND The ESP32-S3 Wi-Fi radio and baseband support t…

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Sincerely, Name/Title： Jimmy Lai/Manager Company: M5Stack Technology Co.,Ltd Address: 106,1st Floor,Building 1,Bright Technology Park 88 Zhuguang North Road,XiliTaoyuan Street Nanshan District,Shenzhen,Guangdong China Phone: +8613509230623 Fax: 755-69815195 E-Mail: [email protected]

Page 1 of 3 FCC ID: 2AN3WSTAMPS3 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. External Photos Photo 1 Photo 2 Page 2 of 3 FCC ID: 2AN3WSTAMPS3 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. Photo 3 Photo 4 Page 3 of 3 FCC ID: 2AN3WSTAMPS3 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. Photo 5 Photo 6 ------End------

FCC ID Label FCC ID:2AN3WSTAMPS3

Page 1 of 3 FCC ID: 2AN3WSTAMPS3 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. Internal Photos Photo 1 Photo 2 Page 2 of 3 FCC ID: 2AN3WSTAMPS3 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. Photo 3 Photo 4 Antenna Page 3 of 3 FCC ID: 2AN3WSTAMPS3 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. Photo 5 ------End------

RF Exposure evaluation FCC ID: 2AN3WSTAMPS3 Exposure category: General population/uncontrolled environment EUT Type: Production Unit Device Type: Mobile Device 1. Reference According to §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. According to §1.1310 and §2.1091 RF exposure is calculated. KDB447498 D01: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies 2. Limit Limits for Maximum Permissible Exposure (MPE)/Controlled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 1842/f 61.4 / / 1.63 4.89/f 0.163 / / (100) * (900/f 2 )* 1.0 f/300 5 6 6 6 6 6 Limits for Maximum Permissible Exposure (MPE)/Uncontrolled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 824/f 27.5 / / 1.63 2.19/f 0.073 / / (100) * (180/f 2 )* 0.2 f/1500 1.0 30 30 30 30 30 F=frequency in MHz *=Plane-wave equivalent power density 3. MPE Calculation Method Predication of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 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 4. Antenna Information Only use antennas certificated as follows provided by manufacturer; Antenna No. Model No. of antenna: Type of antenna: Gain of the antenna (Max.) Frequency range: 2.4G / Metal antenna 2.46dBi for 2400-2500MHz; 5. Manufacturing Tolerance WIFI(Peak) IEEE 802.11b (PEAK) Frequency (MHz) Antenna 1 2412 2437 2462 Target (dBm) 18 18 19 Tolerance ± (dB) 1.0 1.0 1.0 IEEE 802.11g (PEAK) Frequency (MHz) Antenna 1 2412 2437 2462 Target (dBm) 18 18 18 Tolerance ± (dB) 1.0 1.0 1.0 IEEE 802.11n HT20 (PEAK) Frequency (MHz) Antenna 1 2412 2437 2462 Target (dBm) 17 17 17 Tolerance ± (dB) 1.0 1.0 1.0 IEEE 802.11n HT40 (PEAK) Frequency (MHz) Antenna 1 2422 2437 2452 Target (dBm) 18 18 18 Tolerance ± (dB) 1.0 1.0 1.0 BLE GFSK 1Mbps(Peak) Channel Channel 0 Channel 19 Channel 39 Target (dBm) 8 9 9 Tolerance ±(dB) 1.0 1.0 1.0 GFSK 2Mbps(Peak) Channel Channel 0 Channel 19 Channel 39 Target (dBm) 8 9 9 Tolerance ±(dB) 1.0 1.0 1.0 6. Standalone MPE Result As declared by the Applicant, the EUT is a wireless device used in a fix application, at least 20 cm from any body part of the user or nearby persons; from the maximum EUT RF output power, the minimum separation distance, r =20cm, as well as the gain of the used antenna is 2.46dBi, the RF power density can be obtained. Modulation Type Output power Antenna Gain (dBi) Antenna Gain (linear) MPE (mW/cm 2 ) MPE Limits (mW/cm 2 ) dBm mW 2.4GWIFI 20 100 2.46 1.762 0.03505 1.0000 2.4GBLE 10 10 2.46 1.762 0.003505 1.0000 Remark: 1. Output power (Peak) including turn-up tolerance; 2. MPE evaluate distance is 20cm from user manual provide by manufacturer. 7. Conclusion The measurement results comply with the FCC Limit per 47 CFR 2.1091 for the uncontrolled RF Exposure of mobile device. ----------------THE END OF REPORT---------------

Page 1 of 36 Report No.: AIT22120605W1 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. TEST REPORT Client Information: Applicant: M5Stack Technology Co., Ltd Applicant add.: 106,1st Floor,Building 1,Bright Technology Park 88 Zhuguang North Road,XiliTaoyuan Street,Nanshan District,Shenzhen,Guangdong,China Manufacturer: M5Stack Technology Co., Ltd Manufacturer add.: 106,1st Floor,Building 1,Bright Technology Park 88 Zhuguang North Road,XiliTaoyuan Street,Nanshan District,Shenzhen,Guangdong,China Product Information: Product Name: M5StampS3 Model No.: StampS3 Brand Name: M5STACK FCC ID: 2AN3WSTAMPS3 Applicable standards : FCC CFR Title 47 Part 15 Subpart C Section 15.247 Prepared By: Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang,Dongguan, Guangdong, China Tel.: +86-769-8202 0499 Fax.: +86-769-8202 0495 Date of Receipt: Dec. 06, 2022 Date of Test: Dec. 06, 2022~ Dec. 11, 2022 Date of Issue: Dec. 12, 2022 Test Result: Pass This device described above has been tested by Dongguan Yaxu (AiT) Technology Limited and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. Note: This report shall not be reproduced except in full, without the written approval of Dongguan Yaxu (AiT) Technology Limited, this document may be altered or revised by Dongguan Yaxu (AiT) Technology Limited, personal only, and shall be noted in the revision of the document. This test report must not be used by the client to claim product endorsement. Reviewed by: Approved by: Simba Huang Seal.chen Page 2 of 36 Report No.: AIT22120605W1 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. 1 Contents Page COVER PAGE 1 CONTENTS .................................................................................................................................................................... 2 2 TEST SUMMARY .......................................................................................................................................................... 4 2.1 Statement of the Measurement Uncertainty .............................................................................. 4 2.2 Measurement Uncertainty ......................................................................................................... 4 3 TEST FACILITY ............................................................................................................................................................. 5 3.1 Deviation from standard ............................................................................................................ 5 3.2 Abnormalities from standard conditions .................................................................................... 5 3.3 Test Location ............................................................................................................................. 5 4 GENERAL INFORMATION ......................................................................................................................................... 6 4.1 Test frequencies ........................................................................................................................ 7 4.2 EUT Peripheral List ................................................................................................................... 7 4.3 Test Peripheral List ................................................................................................................... 7 4.4 TEST METHODOLOGY............................................................................................................ 8 4.5 Description of Test Modes ......................................................................................................... 9 5 EQUIPMENT USED DURING TEST ........................................................................................................................ 10 6 TEST RESULTS AND MEASUREMENT DATA .................................................................................................... 11 6.1 Antenna requirement .............................................................................................................. 11 6.2 On Time and Duty Cycle ......................................................................................................... 12 6.3 Maximum Conducted Output Peak Power Measurement ....................................................... 13 6.4 6 dB Spectrum Bandwidth Measurement ................................................................................ 15 6.5 Power Spectral Density ........................................................................................................... 16 6.6 Conducted Spurious Emissions and Band Edges Test ........................................................... 18 6.7 Restrict-band Band-edge Measurements ............................................................................... 20 6.8 Radiated Emissions Measurement ......................................................................................... 23 6.9 Conducted Emissions ............................................................................................................. 33 7 TEST SETUP PHOTOGRAPHS OF EUT ................................................................................................................ 36 8 EXTERNAL PHOTOGRAPHS OF EUT ................................................................................................................... 36 9 INTERNAL PHOTOGRAPHS OF EUT .................................................................................................................... 36 Page 3 of 36 Report No.: AIT22120605W1 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan…

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Page 1 of 41 Report No.: AIT22120605W2 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. TEST REPORT Client Information: Applicant: M5Stack Technology Co., Ltd Applicant add.: 106,1st Floor,Building 1,Bright Technology Park 88 Zhuguang North Road,XiliTaoyuan Street,Nanshan District,Shenzhen,Guangdong,China Manufacturer: M5Stack Technology Co., Ltd Manufacturer add.: 106,1st Floor,Building 1,Bright Technology Park 88 Zhuguang North Road,XiliTaoyuan Street,Nanshan District,Shenzhen,Guangdong,China Product Information: Product Name: M5StampS3 Model No.: StampS3 Brand Name: M5STACK FCC ID: 2AN3WSTAMPS3 Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Prepared By: Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang,Dongguan, Guangdong, China Tel.: +86-769-8202 0499 Fax.: +86-769-8202 0495 Date of Receipt: Dec. 06, 2022 Date of Test: Dec. 06, 2022~ Dec. 11, 2022 Date of Issue: Dec. 12, 2022 Test Result: Pass This device described above has been tested by Dongguan Yaxu (AiT) Technology Limited and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. Note: This report shall not be reproduced except in full, without the written approval of Dongguan Yaxu (AiT) Technology Limited, this document may be altered or revised by Dongguan Yaxu (AiT) Technology Limited, personal only, and shall be noted in the revision of the document. This test report must not be used by the client to claim product endorsement. Reviewed by: Approved by: Simba Huang Seal.chen Page 2 of 41 Report No.: AIT22120605W2 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. 1 Contents Page COVER PAGE 1 CONTENTS .................................................................................................................................................................... 2 2 TEST SUMMARY .......................................................................................................................................................... 5 2.1 Statement of the Measurement Uncertainty .............................................................................. 5 2.2 Measurement Uncertainty ......................................................................................................... 5 3 TEST FACILITY ............................................................................................................................................................. 6 3.1 Deviation from standard ............................................................................................................ 6 3.2 Abnormalities from standard conditions .................................................................................... 6 3.3 Test Location ............................................................................................................................. 6 4 GENERAL INFORMATION ......................................................................................................................................... 7 4.1 Test frequencies ........................................................................................................................ 8 4.2 EUT Peripheral List ................................................................................................................... 8 4.3 Test Peripheral List ................................................................................................................... 8 4.4 TEST METHODOLOGY............................................................................................................ 9 4.5 Description of Test Modes ....................................................................................................... 10 5 EQUIPMENT USED DURING TEST ........................................................................................................................ 11 6 TEST RESULTS AND MEASUREMENT DATA .................................................................................................... 12 6.1 Antenna requirement .............................................................................................................. 12 6.1.1 Standard requirement: .................................................................................................... 12 6.1.2 EUT Antenna: ................................................................................................................. 12 6.2 On Time and Duty Cycle ......................................................................................................... 13 6.2.1 Standard requirement: .................................................................................................... 13 6.2.2 Measuring Instruments and Setting: ............................................................................... 13 6.2.3 Test Procedures .............................................................................................................. 13 6.2.4 Test Setup Layout ........................................................................................................... 13 6.2.5 EUT Operation during Test ............................................................................................. 13 6.2.6 Test result ....................................................................................................................... 13 6.3 Maximum Conducted Output Peak Power Measurement ....................................................... 14 6.3.1 Standard requirement: .................................................................................................... 14 6.3.2 Measuring Instruments: .................................................................................................. 14 6.3.3 Test Procedures: ....…

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Date09/28/2018VersionNo.A 上海德门电子科技有限公司 1 上海德门电子科技有限公司 SHANGHAIDEMANELECTRONICSTECHNOLOGYCO.,LTD. 产品规格书 PRODUCTSPECIFICATION 客户 Customer 客户编码 Customer’spartnumber 产品料号 ProductMaterialCode TFPD07H09100011 工作频段 WorkingBand 2400-2500MHz 发行日期 IssueDate 2018-09-28 发行版本 ReleaseVersion A 作者 Author Date09/28/2018VersionNo.A 上海德门电子科技有限公司 2 1产品技术指标（PRODUCTTECHNICALSPECIFICATION） 电性能指标ElectricalSpecifications 频率范围FrequencyRange（MHz）2400-2500 频带宽度Bandwidth（MHz）100 输入阻抗InputImpendence（Ω）50 电压驻波比VSWR＜2.5 增益Gain（dBi）＞1.0 极化形式PolarizationType垂直极化Vertical 机械指标MechanicalSpecifications 天线长度AntennaLength（mm）13.75mm 连接方式ConnectionMode焊接Welding 工作温度OperatinTemp（°C）-30～70 储存温度StoringTemp(°C)-30～70 外壳颜色RadomeColor银色Silver 2产品电性能参数（PRODUCTELECTRICALPERFORMANCEPARAMETER） 2.1产品图片（Productpicture） 2.2反射损耗（S11） Date09/28/2018VersionNo.A 上海德门电子科技有限公司 3 2.3驻波比(VSWR) 2.4史密斯图（SmithChart） Date09/28/2018VersionNo.A 上海德门电子科技有限公司 4 2.5效率、增益（Efficiency/Gain） Freq.(MHz)Gain(dBi)Effi.(%) 24001.9456.04 24102.0257.32 24202.3961.25 24302.4661.67 24402.4263.55 24502.2663.16 24602.3063.47 24702.1062.04 24802.2361.82 24901.9659.30 25001.8556.17 Avg.2.1760.52 Date09/28/2018VersionNo.A 上海德门电子科技有限公司 5 3产品尺寸（Productdimensions） Date09/28/2018VersionNo.A 上海德门电子科技有限公司 2D Radiation Pattern PHI=0 PHI=90 HETA=90

Dongguan Yaxu(AiT) Technology Limited Report No.: AIT22120605W1 FCC ID: 2AN3WSTAMPS3 Page 1 of 36 Appendix B RF Test Data for BT (BLE) (Conducted Measurement) Product Name: M5StampS3 Trade Mark: M5STACK Test Model: StampS3 Environmental Conditions Temperature: 24.0 C Relative Humidity: 52.1% ATM Pressure: 100.0 kPa Test Engineer: Simba Huang Supervised by: Seal Chen Dongguan Yaxu(AiT) Technology Limited Report No.: AIT22120605W1 FCC ID: 2AN3WSTAMPS3 Page 2 of 36 Contents Page COVER PAGE 1 Duty Cycle ........................................................................................................................................................................................... 3 1.1 Test Result ............................................................................................................................................................................... 3 1.2 Test Graphs ............................................................................................................................................................................. 4 2 Maximum Conducted Output Power ................................................................................................................................................... 7 2.1 Test Result ............................................................................................................................................................................... 7 2.2 Test Graphs ............................................................................................................................................................................. 8 3 -6dB Bandwidth ................................................................................................................................................................................. 11 3.1 Test Result ............................................................................................................................................................................. 11 3.2 Test Graphs ........................................................................................................................................................................... 12 4 Maximum Power Spectral Density Level ........................................................................................................................................... 15 4.1 Test Result ............................................................................................................................................................................. 15 4.2 Test Graphs ........................................................................................................................................................................... 16 5 Band Edge ......................................................................................................................................................................................... 19 5.1 Test Result ............................................................................................................................................................................. 19 5.2 Test Graphs ........................................................................................................................................................................... 20 6 Conducted RF Spurious Emission ..................................................................................................................................................... 24 6.1 Test Result ............................................................................................................................................................................. 24 6.2 Test Graphs ........................................................................................................................................................................... 25 7 Restrict Band ..................................................................................................................................................................................... 31 7.1 Test Result ............................................................................................................................................................................. 31 7.2 Test Graphs ........................................................................................................................................................................... 33 Dongguan Yaxu(AiT) Technology Limited Report No.: AIT22120605W1 FCC ID: 2AN3WSTAMPS3 Page 3 of 36 1 Duty Cycle 1.1 Test Result Mode Frequency (MHz) Duty Cycle (%) 1/T (kHz) BLE 1M 2402 84.27 0.48 BLE 1M 2440 84.4 0.48 BLE 1M 2480 84.4 0.48 BLE 2M 2402 57.48 0.93 BLE 2M 2440 57.31 0.94 BLE 2M 2480 57.43 0.94 Dongguan Yaxu(AiT) Technology Limited Report No.: AIT22120605W1 FCC ID: 2AN3WSTAMPS3 Page 4 of 36 1.2 Test Graphs Test Graphs BLE 1M 2402MHz BLE 1M 2440MHz Dongguan Yaxu(AiT) Technology Limited Report No.: AIT22120605W1 FCC ID: 2AN3WSTAMPS3 Page 5 of 36 BLE 1M 2480MHz BLE 2M 2402MHz Dongguan Yaxu(AiT) Technology Limited Report No.: AIT22120605W1 FCC ID: 2AN3WSTAMPS3 Page 6 of 36 BLE 2M 2440MHz BLE 2M 2480MHz Dongguan Yaxu(AiT) Technology Limited Report No.: AIT22120605W1 FCC ID: 2AN3WSTAMPS3 Page 7 of 36 2 Maximum Conducted Output Power 2.1 Test Result Mode Frequency (MHz)Conducted Power (dBm) Limit (dBm)Verdict BLE 1M 2402 7.97 30 Pass BLE 1M 2440 8.88 30 Pass BLE 1M 2480 8.81 30 Pass BLE 2M 2402 8.36 30 Pass BLE 2M 2440 9.27 30 Pass BLE 2M 2480 9.23 30 Pass Dongguan Yaxu(AiT) Technology Limited Report No.: AIT22120605W1 FCC ID: 2AN3WSTAMPS3 Page 8 of 36 2.2 Test Graphs Test Graphs BLE 1M 2402MHz BLE 1M 2440MHz Dongguan Yaxu(AiT) Technology Limited …

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