Modular Approval Letter

FCC ID: 2AC7Z-ESP32WROOM32U

Cover Letter(s)

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FCCID_3717261

Modular Approval Request Letter FCC ID: 2AC7Z-ESP32WROOM32U Data: January 12, 2018 Gentlemen: There’s a Wi-Fi Internet of Things Module that would like to have your authorization as a modular approval. The specific product as below, 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 & Bluetooth Internet of Things Module Model Number ESP32-WROOM-32U FCC ID 2AC7Z-ESP32WROOM32U Requirement of Public Notice 15.212 Reference to ESP32‐WROOM‐32U 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 ESP32. Please see schematic.pdf 3. The modular transmitter must have its own power supply regulation. As we showed in the module's schematic , VDD33 is system's main power input, its working voltage is 2.7~3.6v and we suggest to use typical voltage 3.3v to power the system. And there are several LDOs in our chip(ESP32‐D0WD), when power on, it will convert the voltage to the whole chip. Please see schematic.pdf 4. The modular transmitter must comply with the antenna requirements of The ESP32‐WROOM‐32U meets the FCC antenna requirements. It is Section 15.203 and 15.204(c). an On‐board antenna, Please see internal photo.pdf 5. The modular transmitter must be tested in a stand‐alone configuration, The ESP32‐WROOM‐32U was tested in a stand‐alone configuration i.e., the module must not be inside another device during testing. via com serial interface. Please see test set‐up photo.pdf 6. The modular transmitter must be labeled with its own FCC ID number, The label position of ESP32‐WROOM‐32U is clearly indicated. If the and, if the FCC ID is not visible when the module is installed inside another FCC ID of the module cannot be seen when it is installed, then the device, then the outside of the device into which the module is installed host label must include the text: Contains FCC ID: must also display a label referring to the enclosed module. 2AC7Z‐ESP32WROOM32U. Please see the label.pdf 7. The modular transmitter must comply with any specific rule or operating The ESP32‐WROOM‐32U is compliant with all applicable FCC rules. requirements applicable to the transmitter and the manufacturer must Detail instructions are given in the Users Manual. Please see user provide adequate instructions along with the module to explain any such manual.pdf requirements. A copy of these instructions must be included in the application for equipment authorization. 8. The modular transmitter must comply with any applicable RF exposure The ESP32‐WROOM‐32U is approved to comply with the applicable requirements. For example, FCC Rules in Sections 2.1091, 2.1093 and RF exposure requirement, please see the MPE evaluation with 20cm specific Sections of Part 15, including 15.319(i), 15.407(f), 15.253(f) and as the distance restriction. 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). Thank you. Sincerely, Minjie Cai / Marketing Manager ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD


Document Created: 2018-01-12 10:19:26
Document Modified: 2018-01-12 10:19:26
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