2AC7Z-ESPWROOM02Wi-Fi Internet of Things Module

Report No.: RXA1503-0042MPE01 Page 1 of 5 : MPE REPORT Product Name Wi-Fi Internet of Things Module Model ESP-WROOM-02 Brand Name WROOM FCC ID 2AC7Z-ESPWROOM02 Applicant ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD Manufacturer ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD Date of issue April 10, 2015 Approved by Kai Xu Director Revised by Jiangpeng Lan SAR Manager Performed by Liang Ye SAR Engineer Test By Company: TA Technology (Shanghai) Co., Ltd. Address: No.145, Jintang Rd, Tangzhen Industry Park, Pudong Shanghai,China Contact: Xu Kai Telephone: +86-021-50791141/2/3 Fax: +86-021-50791141/2/3-8000 Website: http://www.ta-shanghai.com E-mail: [email protected] TA Technology (Shanghai)Co.,Ltd. Test Report Report No.: RXA1503-0042MPE01 Page 2 of 5 Maximum Permissible Exposure Type of EUT: Wi-Fi Internet of Things Module FCC ID: 2AC7Z-ESPWROOM02 Manufacturer: ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD Model: ESP-WROOM-02 Maximum conducted output power (measured) and antenna Gain: Band Output Power(dBm) 802.11b 22.23 802.11g 21.57 802.11n(20M) 22.04 According to section 1.1310 of FCC 47 CFR Part 1, limits for maximum permissible exposure (MPE) are as following Band maximum tune up procedure (dBm) Antenna Gain (dBi) 802.11b 23 2 802.11g 23 2 802.11n(20M) 23.5 2 TA Technology (Shanghai)Co.,Ltd. Test Report Report No.: RXA1503-0042MPE01 Page 3 of 5 Note1. Occupational/controlled limits apply in situations in which persons are exposed as a consequence of their employment provided those persons are fully aware of the potential for exposure and can exercise control over their exposure. Limits for occupational/controlled exposure also apply in situations when an individual is transient through a location where occupational / controlled limits apply provided he or she is made aware of the potential for exposure. Note2: General population/uncontrolled exposures apply in situations in which the general public may be exposed, or in which persons that are exposed as a consequence of their employment may not be fully aware of the potential for exposure or can not exercise control over their exposure. TA Technology (Shanghai)Co.,Ltd. Test Report Report No.: RXA1503-0042MPE01 Page 4 of 5 The maximum permissible exposure for 300~1500MHz is f/1500, 1500~100,000MHz is f/1500.So IMPORTANT NOTE: To comply with the FCC RF exposure compliance requirements, the antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. No change to the antenna or the device is permitted. Any change to the antenna or the device could result in the device exceeding the RF exposure requirements and void user’s authority to operate the device. Band The maximum permissible exposure 802.11b/g/n 1 mW/cm² TA Technology (Shanghai)Co.,Ltd. Test Report Report No.: RXA1503-0042MPE01 Page 5 of 5 RF Exposure Calculations: The following information provides the minimum separation distance for the highest gain antenna provided. This calculation is based on the conducted power, considering maximum power and antenna gain. The formula shown in KDB 865664 D01 is used in the calculation. Equation from KDB 865664 D01, Edition 97-01 is: S= PG / 4∏R 2 where: S = power density (in appropriate units, e.g. mW/cm 2 ) P = Time-average maximum tune up procedure (in appropriate units, e.g., mW) G = the numeric gain of the antenna R = distance to the center of radiation of the antenna (20 cm = limit for MPE) So, the numeric gain (G) of the antenna with a gain specified in dB is determined by Numeric gain (G)=10^(antenna gain/10)=10^(2/10)=1.58 dB 802.11b PG = 23dBm+ (1.58dB) =24.58dBm=287mW 802.11g PG = 23dBm+ (1.58dB) =24.58dBm= 287mW 802.11n(20M) PG = 23.5dBm+(1.58dB)=25.08dBm= 322mW R =20 cm ∏= 3.1416 Solving for S, the power density at 20 cm is Band Test Result (mW/cm 2 ) Limit Value (mW/cm 2 ) 802.11b 0.06 1 mW/cm² 802.11g 0.06 1 mW/cm² 802.11n(20M) 0.06 1 mW/cm² Note: For mobile or fixed location transmitters, minimum separation distance is 20cm, even if calculations indicate MPE distance is less.

ESP8266User Manual 1 / 13Espressif SystemsJune 19, 2014 ESP-WROOM-02 WiFiModule USER MANUAL FOR OEM OR INTEGRATORS ONLY: This module is limited to OEM installation only and must not be sold to end-users. [ ] CONFIDENTIAL [ ] INTERNAL [  ] PUBLIC Disclaimer and Copyright Notice Information in this document, including URL references, is subject to change without notice. THIS DOCUMENT IS PROVIDED "AS IS" WITH NO WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE. All liability, including liability for infringement of any proprietary rights, relating to use of information in this document is disclaimed. No licenses express or implied, by estoppel or otherwise, to any intellectual property rights are granted herein. The Wi-Fi Alliance Member Logo is a trademark of the Wi-Fi Alliance. All trade names, trademarks and registered trademarks mentioned in this document are property of their respective owners, and are hereby acknowledged. Copyright © 2013 Espressif Systems Inc. All rights reserved. Caution: Changes or modifications not expressly approved by the manufacturer could void the user’s authority to operate the equipment. ESP8266User Manual 2 / 13Espressif SystemsJune 19, 2014 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. ESP8266User Manual 3 / 13Espressif SystemsJune 19, 2014 2. Table of Contents 2. Table of Contents ....................................................................................................... 3 1. Foreword .................................................................................................................... 4 2. FCC RF exposure requirements ................................................................................. 5 2.1. Standards and Regulatory Compliance ................................................................ 5 2.1.1. Standards and certification .............................................................................. 5 2.1.2. FCC certification requirements ........................................................................ 5 2.1.3. FCC RF exposure requirements ........................................................................ 7 3. Download Tools .......................................................................................................... 9 3.1. XTCOM_UTIL ........................................................................................................ 9 3.2. ESP_FLASH_DOWNLOAD ................................................................................... 12 ESP8266User Manual 4 / 13Espressif SystemsJune 19, 2014 1. Foreword This manual mainly introduces how to use ESP8266‐based SDK for Internet of Things, including virtual machine installation, development tool usage, SDK software development kit etc. This module is limited to OEM installation only and must not be sold to end‐users. OEM integrators must be instructed to ensure that the end‐user has no manual instructions to remove or install the device. The end‐user can not remove or install this module to any other devices. ESP8266User Manual 5 / 13Espressif SystemsJune 19, 2014 2. FCC RF exposure requirements 2.1. Standards and Regulatory Compliance 2.1.1. Standards and certification The EUT conforms to the following standards and certification requirements: 802.11 b/g/n FCC ❒ 47 CFR Part 1 ‐ RF radiation exposure limits ❒ 47 CFR Part 2 ‐ Equipment authorization ❒ 47 CFR Part C ‐ WIFI 2.1.2. FCC certification requirements According to the definition of mobile and fixed device is described in Part 2.1091(b), this device is a mobile device. And the following conditions must be met: 1. The EUT is a mobile device; maintain at least a 20 cm separation between the EUT and the user’s body and must not transmit simultaneously with any other antenna or transmitter. 2. The device is only for fixed operation mode. (A Clas s II Change would be required for near‐body Host applications.) 3. A label with the following statements must be attached to the host end product: This device contains Tx FCC ID: 2AC7Z‐ESP8266EX. 4. To comply with FCC regulations limiting both maximum RF output power and human exposure to RF radiation, maximum antenna gain (including cable loss) must not exceed: ❒ 802.11b band < 2.0 dBi ❒ 802.11g band <2.0 dBi ❒ 802.11n band <2.0 dBi 5. This module must not transmit simultaneously with any other antenna or ESP8266User Manual 6 / 13Espressif SystemsJune 19, 2014 transmitter 6. The host end product must include a user manual that clearly defines operating requirements and conditions that must be observed to ensure compliance with current FCC RF exposure guidelines. For portable devices, in addition to the conditions 3 through 6 described above, a separate approval is required to satisfy the SAR requirements of FCC Part 2.1093 If the device is used for other equipment that separate approval is required for all other operating configurations, i ncluding portable configurations with respect to 2.1093 and different antenna configurations. For this device, OEM integrators must be provided with labeling instructions of finished products. Please refer to KDB784748 D01 v08, section 8. Page 6/7 last two paragraphs: A certified modular has the option to use a permanently affixed label, or an electronic label. For a permanently affixed label, the module must be labelled with an FCC ID ‐ Section 2.926 (see 2.2 Certification (labelling requirements) above). The OEM manual must provide clear instructions explaining to the OEM the labelling requirements, options and OEM user manual instructions that are required (see next paragraph). For a host using a certified modular with a …

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Request for Confidentiality Date: __ 2015/04/09______ Subject: C onfidentiality Request for: _____2AC7Z-ESPWROOM02 Pursuan t to FCC 47 CRF 0.457(d) and 0.459 and IC RSP-100, Section 10, the applicant requests that a part of the subject FCC application be held confidential. Type of Confidentiality Requested Exhibit Short Term Permanent Block Diagrams Short Term External Photos Short Term Permanent* 1 Internal Photos Short Term Permanent Operation Description/Theory of Operation Short Term Permanent Parts List & Placement/BOM Short Term Permanent Tune-Up Procedure Short Term Permanent Schematics Short Term Test Setup Photos Short Term Permanent* User’s Manual *Note: __ ____(Insert Explanation as Necessary)______ _____ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD______ has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality: The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality: The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of ___(specify number of days not to exceed 180 ) 2 ___ days from the date of NOTE for Industry Canada Applications: The applicant understands that until such time that IC distinguishes between Short Term and Permanent Confidentiality, either type of marked exhibit above will simply be marked Confidential when submitted to IC. Sincerely, Minjie Cai/Marketing Maneger

Modular Approval Request Letter FCC ID: 2AC7Z- ESPWROOM02 Data: April 15, 2015 Gentlemen: There’s an Wi-Fi Internet of Things Module that would like to have your authorization as a modular approval. The specific product as below, Wi-Fi Internet of Things Module, with its designed features and specified description, meets special requirements for full modular approval on FCC Public Notice 15.212 Released: June 26, 2000 by cross-reference list below. Company : ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD Model Name : Wi-Fi Internet of Things Module Model Number : ESP-WROOM-02 FCC ID : 2AC7Z- ESPWROOM02 Requirement of Public Notice 15.212 Reference to ESP‐WROOM‐02. 1. The modular transmitter must have its own RF shielding. The module has its own RF shielding. Please see external photo.pdf 2. The modular transmitter must have buffered modulation/data inputs. The modular has buffered data inputs, it is integrated in chip ESP‐WROOM‐02. Please see schematic.pdf 3. The modular transmitter must have its own power supply regulation. All power lines derived from the host device are regulated before energizing other circuits internal to the ESP‐WROOM‐02. Please see schematic.pdf 4. The modular transmitter must comply with the antenna requirements of Section 15.203 and 15.204(c). The ESP‐WROOM‐02 meets the FCC antenna requirements. Please see external photo.pdf 5. The modular transmitter must be tested in a stand‐alone configuration, i.e., the module must not be inside another device during testing. The ESP‐WROOM‐02 was tested in a stand‐alone configuration via com serial interface. Please see test set‐up photo.pdf 6. The modular transmitter must be labeled with its own FCC ID number, and, if the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. The label position of ESP‐WROOM‐02 is clearly indicated. If the FCC ID of the module cannot be seen when it is installed, then the host label must include the text: Contains FCC ID: 2AC7Z‐ ESPWROOM02. Please see the label.pdf 7. The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. A copy of these instructions must be included in the application for equipment authorization. The ESP‐WROOM‐02 is compliant with all applicable FCC rules. Detail instructions are given in the Users Manual. Please see user manual.pdf 8. The modular transmitter must comply with any applicable RF exposure requirements. For example, FCC Rules in Sections 2.1091, 2.1093 and specific Sections of Part 15, including 15.319(i), 15.407(f), 15.253(f) and 15.255(g), require that Unlicensed PCS, UNII and millimeter wave devices perform routine environmental evaluation for RF Exposure to demonstrate compliance. In addition, spread spectrum transmitters operating under Section 15.247 are required to address RF Exposure compliance in accordance with Section 15.247(b)(4). The ESP‐WROOM‐02 is approved to comply with the applicable RF exposure requirement, please see the MPE evaluation with 20cm as the distance restriction. Thank you. Sincerely, Minjie Cai / Marketing Manager ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD Tel: 86-021- 61062057 [email protected]

ESP-WROOM-02 external photos Front Side Back Side

The Label will be stamped on the surface of the product.

ESP-WROOM-02 internal photo

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PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C1 C2 C4 L1 L2 R1 U1 U2 R3 C3 C5 U3 ANT1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 C6 3V3 IO13 IO2 IO4 EN RST GND IO5 GND TXD GND RXD TOUT IO16 IO0 IO15 IO12 IO14 ESP_WROOM_02 96.0mm 88.0mm 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 12 12 1 2 1 2 1 2 12 1 23 4 12345678 9 10 11 12 13 14 15 16 1718192021222324 25 26 27 28 29 30 31 32 33 12 1 2 12 1234 5678 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 12 11 11 C1 C2 C4 L1 L2 R1 U1 U2 R3 C3 C5 U3 ANT1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 PIN17 PIN17x1 PIN18 PIN18x1 C6 C1 C2 C4 L1 L2 R1 R3 C3 C5 PIN1 PIN1x1 PIN2 PIN2x1 PIN3 PIN3x1 PIN4 PIN4x1 PIN5 PIN5x1 PIN6 PIN6x1 PIN7 PIN7x1 PIN8 PIN8x1 PIN9 PIN9x1 PIN10 PIN10x1 PIN11 PIN11x1 PIN12 PIN12x1 PIN13 PIN13x1 PIN14 PIN14x1 PIN15 PIN15x1 PIN16 PIN16x1 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TA Technology (Shanghai) Co., Ltd. Test Report Report No.: RXA1503-0042RF01R1 Page 1of 103 TESTING No. L2264 Part 15C TEST REPORT Product Name Wi-Fi Internet of Things Module Model ESP-WROOM-02 Brand Name WROOM FCC ID 2AC7Z-ESPWROOM02 Applicant ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD Manufacturer ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD Date of issue April 17, 2015 TA Technology (Shanghai) Co., Ltd. TA Technology (Shanghai) Co., Ltd. Test Report Report No.: RXA1503-0042RF01R1 Page 2of 103 GENERAL SUMMARY Reference Standard(s) FCC CFR47 Part 15C (2013) Radio Frequency Devices 15.205 Restricted bands of operation; 15.207 Conducted limits; 15.209 Radiated emission limits; general requirements; 15.247 Operation within the bands 902-928 MHz,2400-2483.5 MHz, and 5725-5850MHz. ANSI C63.4 Methods of Measurement of Radio-Noise Emission from Low-Voltage Electrical and Electronic Equipment in the Range of 9 KHz to 40GHz. (2009) KDB 558074 D01 DTS Meas Guidance v03r02 Guidance for Performing Compliance Measurements on Digital Transmission Systems (DTS) Operating Under §15.247 Conclusion This equipment has been measured in all cases requested by the relevant standards. Test results in Chapter 2 of this test report are below limits specified in the relevant standards. General Judgment: Pass Comment The test result only responds to the measured sample. Approved by Kai Xu Director Revised by Lingling Kang RF Manager Performed by Changxu Wan RF Engineer TA Technology (Shanghai) Co., Ltd. Test Report Report No.: RXA1503-0042RF01R1 Page 3of 103 TABLE OF CONTENT 1. General Information ..................................................................................................................... 4 1.1. Notes of the test report ......................................................................................................... 4 1.2. Testing laboratory ................................................................................................................. 5 1.3. Applicant Information ............................................................................................................ 5 1.4. Manufacturer Information ...................................................................................................... 5 1.5. Information of EUT ................................................................................................................ 6 1.6. Test Date .............................................................................................................................. 6 2. Test Information ........................................................................................................................... 7 2.1. Test Mode ............................................................................................................................. 7 2.2. Summary of test results ........................................................................................................ 8 2.3. Peak Power Output –Conducted ........................................................................................... 9 2.4. Occupied Bandwidth (6dB) ................................................................................................. 11 2.5. Band Edge Compliance ...................................................................................................... 17 2.6. Spurious Radiated Emissions in the restricted band ........................................................... 21 2.7. Power Spectral Density ....................................................................................................... 30 2.8. Spurious RF Conducted Emissions .................................................................................... 36 2.9. Radiates Emission .............................................................................................................. 54 2.10. Conducted Emissions ......................................................................................................... 93 2. Main Test Instruments .............................................................................................................. 100 ANNEX A: EUT Appearance and Test Setup ................................................................................... 101 A.1 EUT Appearance .............................................................................................................. 101 A.2 Test Setup ........................................................................................................................ 102 TA Technology (Shanghai) Co., Ltd. Test Report Report No.: RXA1503-0042RF01R1 Page 4of 103 1. General Information 1.1. Notes of the test report TA Technology (Shanghai) Co., Ltd. has obtained the accreditation of China National Accreditation Service for Conformity Assessment (CNAS), and accreditation number: L2264. TA Technology (Shanghai) Co., Ltd. has been listed on the US Federal Communications Commission list of test facilities recognized to perform electromagnetic emissions measurements. The site recognition number is 428261. TA Technology (Shanghai) Co., Ltd. has been listed by industry Canada to perform electromagnetic emission measurement. The site recognition number is 8510A. TA Technology (Shanghai) Co., Ltd. guarantees the reliability of the data presented in this test report, which is the results of measurements and tests performed for the items under test on the date and under the conditions stated in this test report and is based on the knowledge and technical facilities available at TA Technology (Shanghai) Co., Ltd. at the time of execution of the test. TA Technology (Shanghai) Co., Ltd. is liable to the client for the maintenance by its personnel of the confidentiality of all information related to the items under test and the results of the test. The sample under test was selected by the Client. This report only refers to the item that has undergone the test. The test results in this test report relate only to t…

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ESP-WROOM-02 FCC test setup photo 1. below 1 GHz Radiated Emission Test Setup 2. Above 1 GHz Radiated Emission Test Setup 3. Conducted Emission Test Setup