Module Approval Letter

FCC ID: 2AC7Z-ESPWROOMS2

Cover Letter(s)

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FCCID_3262590

Applicant ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD FCC ID: 2AC7Z-ESPWROOMS2 Section 15.212 Modular Transmitters Request for Modular Approval  Request for Limited Modular Approval   Requirements EUT Conditions Comply(Y/N) Single Modular Approval Requirements 1 The radio elements of the modular Refer to external photos. Y transmitter must have their own shielding. This module does have The physical crystal and tuning capacitors shield cover. may be located external to the shielded radio elements. 2 The modular transmitter must have All inputs to the modules Y buffered modulation/data inputs (if such are buffered through logic inputs are provided) to ensure that the or microprocessor inputs. module will comply with part 15 Refer to Schematics. requirements under conditions of excessive data rates or over‐modulation. 3 The modular transmitter must have Module uses 3.3 V power. Y its own power supply regulation. Refer to user manual. 4 The modular transmitter must comply The modular transmitter Y with the antenna and transmission system has a PCB antenna requirements of §§15.203, 15.204(b) and arrangement for Wi‐ 15.204(c). The antenna must either be Fi, Refer to external and permanently attached or employ a internal photo. “unique” antenna coupler (at all connections between the module and the antenna, including the cable). The “professional installation” provision of §15.203 is not applicable to modules but can apply to limited modular approvals under paragraph (b) of this section.

5 The modular transmitter must be The modular transmitter Y tested in a stand‐alone configuration, is connected to the i.e., the module must not be inside controlled board when another device during testing for testing. compliance with part 15 Please refer to setup requirements. Unless the transmitter photo. module will be battery powered, it must comply with the AC line conducted requirements found in §15.207. AC or DC power lines and data input/output lines connected to the module must not contain ferrites, unless they will be marketed with the module (see §15.27(a)). The length of these lines shall be the length typical of actual use or, if that length is unknown, at least 10 centimeters to insure that there is no coupling between the case of the module and supporting equipment. Any accessories, peripherals, or support equipment connected to the module during testing shall be unmodified and commercially available (see §15.31(i)). 6 If using a permanently affixed label, Refer to the label. Y the modular transmitter must be labeled with its own FCC identification number, and, if the FCC identification number 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. This exterior label can use wording such as the following:“ContainsTransmitter Module FCC ID: 2AC7Z-ESP-WROOM-32”Any similarwording that expresses the same meaning may be used. The Grantee may either provide such a label, an example of which must be included

in the application for equipment authorization, or, must provide adequate instructions along with the module which explain this requirement. In the latter case, a copy of these instructions must be included in the application for equipment authorization. 7 The modular transmitter must Refer to manual Y comply with any specific rules or operating requirements that ordinarily apply to a complete 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. 8 The modular transmitter must Refer to manual Y comply with any applicable RF exposure requirements in its final configuration. Sincerely Yours, Signature: Printed name: Minjie Cai Title: Marketing Manager


Document Created: 2019-11-09 07:51:33
Document Modified: 2019-11-09 07:51:33
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