2AL3B-ESPC2-12WiFi module

ESPC2-12 ——2.4GHz Wi-Fi and BLE5.0 Combo Module Version: 1.0 Date: July.20, 2022 Features  General  Chip: ESP32-C2, ESP8684H2  Module Size:16mm*24mm*3mm  2MByte embedded flash  576KB ROM  272KB SRAM  Wi-Fi Features  IEEE 802.11 b/g/n-compliant  Center frequency range of operating channel: 2412 ~ 2484 MHz  Supports 20 MHz bandwidth in 2.4 GHz band  1T1R mode with data rate up to 72.2 Mbps  TX/RX A-MPDU, TX/RX A-MSDU  Immediate Block ACK  Fragmentation and defragmentation  Automatic Beacon monitoring (hardware TSF)  3 x virtual Wi-Fi interfaces  Simultaneous support for Infrastructure BSS in Station mode, Soft-AP mode, Station + Soft-AP mode, and promiscuous mode  Bluetooth Features  Bluetooth LE: Bluetooth 5  Speed: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps  Advertising extensions  Multiple advertisement sets  Channel selection algorithm #2  Peripheral Interfaces  GPIO * 13;  UART;  IIC ;  SPI;  EN ;  PWM x 6 ;  ADC;  Working Temperature: -40°C-105°C Applications ● Serial transparent transmission; ● Wi-Fi prober; ● Smart power plug/Smart LED light; ● Mesh networks; ● Sensor networks; ● Over-the-top (OTT) devices; ● Wireless location system beacon; ● Industrial field bus; Module Type Name Antenna Type ESPC2-12 PCB ANT ESPC2-12E U.F.L Ipex Module Structure Product Specification Update Record Date Version Update 2022-07-20 V1.0 First released Table of Contents 1. Introduction ....................................................................................................................... 1 2. Interface Definition ........................................................................................................... 3 3. Size and Layout ................................................................................................................. 5 4. Electronica Characteristics ................................................................................................ 6 5. Power Consumption .......................................................................................................... 7 6. Wi-Fi RF Characteristics ................................................................................................... 7 7. Bluetooth LE Radio ........................................................................................................... 9 8. Recommended Sold Temperature Curve ........................................................................ 11 9. Minimum User System .................................................................................................... 11 10. Recommended Layout Design ...................................................................................... 12 11. Peripheral Design Suggestion ....................................................................................... 13 12. Product Handling ........................................................................................................... 14 13. U.F.L RF Connector ...................................................................................................... 14 14. Packing Instruction ........................................................................................................ 15 ESPC2-12 User Manual Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 1 1. Introduction ESPC2-12 Wi-Fi and BLE coexistence Module is a highly integrated single-chip low power 802.11bgn Wireless LAN (WLAN) network controller. It combines a RISC CPU, WLAN MAC, a 1T1R capable WLAN baseband, RF, and Bluetooth in a single chip. It also provides a bunch of configurable GPIO, which are configured as digital peripherals for different applications and control usage. ESPC2-12 Module use ESP8684 as Wi-Fi and BLE coexistence SOC chip. ESPC2-12 Module integrates internal memories for complete Wi-Fi protocol functions. The embedded memory configuration also provides convenient application developments. ESPC2-12 module supports the standard IEEE802.11 b/g/n/e/i protocol and the complete TCP/IP protocol stack. User can use it to add the Wi-Fi function for the installed devices, and also can be viewed as an independent network controller. Anyway, ESPC2-12 Wi-Fi module provides many probabilities with the best price. Fig.1.1 ESPC2-12 Module Structure ESPC2-12 User Manual Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 2 Technical parameters for ESPC2-12 are listed as follows. Table.1.1 ESPC2-12 Parameters Type Item Parameter Wi-Fi Frequency 2.4G~2.5G (2412M~2484M) Transmit power 802.11b: +20.5 dBm 802.11g: +19 dBm 802.11n: +18 dBm Receiver sensitivity 802.11b: -90 dBm (11Mbps) 802.11g: -77 dBm（54Mbps） 802.11n: -74 dBm（MCS7） EVM -25dB @802.11b,11Mbps @21dBm -27dB @802.11n,54Mbps @19dBm -29dB @802.11n,HT20,MCS7 @18.5dBm Antenna PCB antenna BLE RF power control range -27~20dBm Hardware CPU 32-bit RISC CPU Interface UART/SDIO/SPI/I2C/GPIO/PWM Working voltage 3.0V ~ 3.6V Working temperature -40°C ~ 105°C Environment temperature -40°C ~ 105°C Shape 16mm x 24mm x 3mm Software Wi-Fi working mode STA, Soft-AP and sniffer modes Security mode WPS / WEP / WPA / WPA2 / WPA3 Update firmware UART Download Software develop SDK Network protocol IPv4, TCP/UDP/HTTP/FTP/MQTT ESPC2-12 User Manual Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 3 2. Interface Definition ESPC2-12 Wi-Fi & BLE module interface definition is shown as below。 Fig.2.1 ESPC2-12 Pins Definition Working modes and pins function is shown in Table 2.1. Table.2.1Working Mode Mode IO9 Voltage Level UART Download Mode LOW Flash Boot Mode HIGH (Default) Table.2.2 Pins Function Definition Num. Pin Name Type Function 1 EN I/O Chip enable; Internal Pull-up. HIGH: enable the chip 2 IO0 I/O GPIO0, ADC1_CH0 3 IO1 I/O GPIO1, ADC1_CH1 4 IO2 I/O GPIO2, ADC1_CH2, FSPIQ 5 IO3 I/O GPIO3, ADC1_CH3 6 IO4 I/O GPIO4, ADC1_CH4, MTMS, FSPIHD ESPC2-12 User Manual Doctors of Intelligence & Technology (www.doit.am) Copyright@2014-2022 Page 4 7 IO5 I/O…

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< ShenZhen Doctors of Intelligence & Technology Co.,Ltd.> Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 Company name: ShenZhen Doctors of Intelligence & Technology Co.,Ltd. FCC ID: 2AL3B-ESPC2-12 Gentlemen, In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 ‘Module Certification Guide v02’. FCC ID: 2AL3B-ESPC2-12 has been examined against the following requirements. Items to be covered by Single modular transmitters. Requirement per 15.212 and KDB 996369 D01 ‘Modular Certification Guide v02 Explanation from Grantee (do not write yes/no, but explain why product complies/how it is achieved) 1. The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly The modular have the radio frequency circuitry shielded 2. The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal All modulation and data inputs are buffered by circuitry on the transmitter chip ESP32, as is shown in the schematic. 3. The module must contain power supply regulation on the module Power supply regulation is provided by circuitry on the transmitter chip ESP32, as is shown in the schematic. 4. The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per Sections 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b) EUT module contain a permanently attached antenna. Please reference the exhibition Test Report. 5. The module must demonstrate compliance in a stand- alone configuration Please reference exhibition Test Configuration Photo for the stand-alone test configuration. 6. The module must be labelled with its permanently affixed FCC ID label, or use an electronic display (See KDB Publication 784748 about labelling requirements) The instruction on the labelling rule of the end product has been stated in the Users manual of this module. Please also see the exhibition Label Sample. 7. The module must comply with all specific rules applicable to the transmitter including all the conditions provided in the integration instructions by the grantee The required FCC rule has been fulfilled and all the instructions for maintaining compliance has been clearly stated in the Users Manual. 8. The module must comply with RF exposure requirements Please refer exhibition RF Exposure for the compliance of MPE RF exposure rule. Name: Liuji Shang Title: Manager Signature of applicant Date: 2022.11.18

ShenZhen Doctors of Intelligence & Technology Co.,Ltd. (2022.11.18) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (WiFi module / ESP-C2-12 / FCC ID: 2AL3B-ESPC2-12 ) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☐ Internal Photos ☐ NOTE 1 ☐ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Signature: Name: Liuji Shang Title: Manager

ShenZhen Doctors of Intelligence & Technology Co.,Ltd. (2022.11.18) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature: Name: Liuji Shang Title: Manager

Model: ESPC2-12 External Photos

Model: ESP-C2-12 FCC ID: 2AL3B-ESPC2-12 Label Location

Model: ESP-C2-12 Internal Photos ANT

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2AL3B-ESPC2-12 Applied procedures / limit According to FCC §15.247(i) and §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. Limits for Occupational / Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842 / f 4.89 / f (900 / f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-100,000 5 6 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-100,000 1.0 30 Note: f = frequency in MHz * = Plane-wave equivalent power density MPE PREDICTION Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 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,R=20cm Test Result of RF Exposure Evaluation Modes& Channel Freq. (MHz) Tune up Produce power Maximu m peak output power (dBm) Output power to antenna (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW / cm2 ) Result BLE GFSK& HCH 7±1 8 6.3096 0.7798 (-1.08dBi) 0.00098 1 Pass 2.4G WIFI 802.11g &2412 27±1 28 630.957 0.7621 (-1.18dBi) 0.09571 1 Pass

普尔信通讯科技(深圳)有限公司 Percsson Communication Equipment Co., Ltd This test report belongs to PERCSSON COMMUNICATION EQUIPMENT CO.LTD. and related clients to file,please keeping it propely,without our company and related clients allowed,anybody has no rights to reval it to public. Antenna Test Report For ESPC2-12 Customer 深圳四博智联科技有限公司 Project XT-ZB6 Band 2.4G Color 黑色 PRS PN Version V1.0 Issued by Jason Checked by Mem Confirmed by Zhang Date 2018.06.27 一．TEST INSTRUMENTATION CHAMBER SATIMO Chamber Wireless Networking Test Set Agilent 8960 5515C NETWORK ANALYZER Agilent 8753D TEMPERATURE 20±2°C HUMIDITY 50±20%rh 普尔信通讯科技(深圳)有限公司 Percsson Communication Equipment Co., Ltd This test report belongs to PERCSSON COMMUNICATION EQUIPMENT CO.LTD. and related clients to file,please keeping it propely,without our company and related clients allowed,anybody has no rights to reval it to public. ESPC2-12 Module Antenna Dimension for XT-ZB6 普尔信通讯科技(深圳)有限公司 Percsson Communication Equipment Co., Ltd This test report belongs to PERCSSON COMMUNICATION EQUIPMENT CO.LTD. and related clients to file,please keeping it propely,without our company and related clients allowed,anybody has no rights to reval it to public. 普尔信通讯科技(深圳)有限公司 Percsson Communication Equipment Co., Ltd This test report belongs to PERCSSON COMMUNICATION EQUIPMENT CO.LTD. and related clients to file,please keeping it propely,without our company and related clients allowed,anybody has no rights to reval it to public. 普尔信通讯科技(深圳)有限公司 Percsson Communication Equipment Co., Ltd This test report belongs to PERCSSON COMMUNICATION EQUIPMENT CO.LTD. and related clients to file,please keeping it propely,without our company and related clients allowed,anybody has no rights to reval it to public. 二. Definitions VSWR：Voltage Standing Wave Rate TRP：total radiated power TIS： total istropic sensitivity 主天线驻波比: 2.4G VSWR 1.1 普尔信通讯科技(深圳)有限公司 Percsson Communication Equipment Co., Ltd This test report belongs to PERCSSON COMMUNICATION EQUIPMENT CO.LTD. and related clients to file,please keeping it propely,without our company and related clients allowed,anybody has no rights to reval it to public. 主天线无源效率测试 Freq (MHz) Effi (%) Gain (dBi) 2400 30.91 -1.2 2410 30.74 -1.21 2420 31.4 -1.18 2430 32.06 -1.18 2440 32.66 -1.24 2450 33.14 -1.37 2460 33.31 -1.48 2470 33.49 -1.49 2480 33.81 -1.08 2490 33.79 -0.79 2500 33.38 -0.96 普尔信通讯科技(深圳)有限公司 Percsson Communication Equipment Co., Ltd This test report belongs to PERCSSON COMMUNICATION EQUIPMENT CO.LTD. and related clients to file,please keeping it propely,without our company and related clients allowed,anybody has no rights to reval it to public. 无源方向图： 普尔信通讯科技(深圳)有限公司 Percsson Communication Equipment Co., Ltd This test report belongs to PERCSSON COMMUNICATION EQUIPMENT CO.LTD. and related clients to file,please keeping it propely,without our company and related clients allowed,anybody has no rights to reval it to public.

Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB221107025RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 54 TEST REPORT Compiled by: Reviewed by: Approved by: Chen Zheng Arron Liu Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Product Name: WiFi module FCC ID: 2AL3B-ESPC2-12 Trademark: Model Number: ESPC2-12 Prepared For: ShenZhen Doctors of Intelligence & Technology Co., Ltd Address: 903, 904, Building A, Building 8, International Innovation Valley, Second Dashi Road, Xili, Nanshan District, Shenzhen Manufacturer: Shenzhen Star Link Technology Co., LTD Address: Floor 2, Building D, Kejitong Industrial Zone, Fuhai Street, Bao 'an District, Shenzhen Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: Oct. 21, 2022 Sample tested Date: Oct. 21, 2022 to Nov. 07, 2022 Issue Date: Nov. 07, 2022 Report No.: CTB221107025RFX Test Standards FCC Part15.247 ANSI C63.10:2013 Test Results PASS Remark: This is WIFI-2.4GHz band radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB221107025RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 54 TABLE OF CONTENT Test Report Declaration Page 1. VERSION .......................................................................... 3 2. TEST SUMMARY ................................................................... 4 3. MEASUREMENT UNCERTAINTY ..................................................... 5 4. PRODUCT INFORMATION AND TEST SETUP .......................................... 6 4.1 Product Information .................................................................... 6 4.2 Test Setup Configuration ............................................................... 6 4.3 Support Equipment .................................................................... 6 4.4 Channel List .......................................................................... 7 4.5 Test Mode ............................................................................ 7 4.6 Test Environment ...................................................................... 7 5. TEST FACILITY AND TEST INSTRUMENT USED ....................................... 8 5.1 Test Facility ........................................................................... 8 5.2 Test Instrument Used .................................................................. 8 6. AC POWER LINE CONDUCTED EMISSION ............................................ 10 6.1 Block Diagram Of Test Setup .......................................................... 10 6.2 Limit ................................................................................ 10 6.3 Test procedure ....................................................................... 10 6.4 Test Result .......................................................................... 12 7. RADIATED SPURIOUS EMISSION ................................................... 14 7.1 Block Diagram Of Test Setup .......................................................... 14 7.2 Limit ................................................................................ 14 7.3 Test procedure ....................................................................... 15 7.4 Test Result .......................................................................... 16 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS .......................... 33 8.1 Block Diagram Of Test Setup .......................................................... 33 8.2 Limit ................................................................................ 33 8.3 Test procedure ....................................................................... 33 8.4 Test Result .......................................................................... 34 9. COUDUCTED OUTPUT POWER ..................................................... 40 9.1 Block Diagram Of Test Setup .......................................................... 40 9.2 Limit ................................................................................ 40 9.3 Test procedure ....................................................................... 40 9.4 Test Result .......................................................................... 41 10. 6DB OCCUPIED BANDWIDTH ....................................................... 42 10.1 Block Diagram Of Test Setup ......................................................... 42 10.2 Limit ............................................................................... 42 10.3 Test procedure ...................................................................... 42 10.4 Test Result ......................................................................... 43 11. POWER SPECTRAL DENSITY ...................................................... 47 11.1 Block Diagram Of Test Setup ......................................................... 47 11.2 Limit ............................................................................... 47 11.3 Test procedure ...................................................................... 47 11.4 Test Result ......................................................................... 48 12. ANTENNA REQUIREMENT ......................................................... 52 13. EUT TEST SETUP PHOTOGRAPHS ...............................…

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Model: ESPC2-12 Radiated Emission Below 1G Above 1G Conducted emissions