2AYCN-RE7062.4GHz Wireless LAN Module

RE706B WIFI Module product specification Version ： V 1.2 Effective date： 2020-10-25 RE706B WIFI Module product specification 2 Version update instructions DATE Version Updated content 2020-07-31 V1.0 Initial document 2020-08-07 V1.1 Update pin function 2020-10-25 V1.2 Update RF parameters RE706B WIFI Module product specification 3 1. Product Introduction .................................................................................................. 4 2. Product Features ........................................................................................................ 4 3. Application areas ........................................................................................................ 4 4. Module size and pin definition .................................................................................. 5 5. Electrical parameters .................................................................................................. 6 6. RF performance ......................................................................................................... 7 7. Antenna design considerations ................................................................................... 7 8. Production recommended furnace temperature curve ............................................... 8 9. Packing and shipping method .................................................................................... 9 10. FCC Warning ......................................................................................................... 10 RE706B WIFI Module product specification 4 1. Product Introduction Introduction The RE706B wireless WIFI module adopts the latest low-power Simple-Chip WIFI SV6166F chip design from Southern Silicon Valley, and uses advanced design technology to achieve low power consumption and high throughput; the module hardware integrates WLAN MAC, Baseband , RF, integrated MCU inside the chip, clocked at 160MHz, built-in 192KB SRAM and 128K ROM. It works in the 2.4GHz frequency band and supports 802.11 b/g/n wireless standards; the module adopts 3.3V single power supply and SMT installation method with stamp hole, so that the module can be flexibly applied to various consumer products and can meet customer needs to the greatest extent. 2. Product Features  Andes Technology N10 processor (main frequency 160MHz), 128K ROM and 192KB SRAM for instructions and data, Integrated 16Mbit SPI Flash  DC working voltage: 3V-3.6V  Interface: 1*UART, 4*ADC, 10*GPIO reusable  Support 802.11 b/g/n wireless standard  Support H20/H40  Support STA/AP two working modes  Support WEP, WPA/WPA2 security mode  Support wireless upgrade PCB antenna, low cost, high performance 3. Application areas  Smart home/home appliances  Smart socket/smart lamp  Smart buildings  Industrial wireless control  Baby monitoring room  Webcamera RE706B WIFI Module product specification 5 4. Module size and pin definition 4.1 Dimensions Single board size (mm): 24mm*16mm*2.4mm, PCB thickness 0.8mm ： RE706B WIFI Module product specification 6 4.2 Pin definition Pin numb er Pin name Function description Remark 1 RERST Reset interface, active low 2 GPIO 20 I2S0_MCLK /ADC2/GPIO Range (0-1014mV) 3 LDO_EN Module enable high validity 4 GPIO 12 I2S_DO / SPI_M_MOSI / I2C_M_SCL / GPIO 5 GPIO 10 I2S_DI / SPI_M_MISO / I2C_M_SDA / GPIO 6 GPIO 01 PWM 1 / GPIO PWM(0-20KHz) 7 GPIO 02 PWM 2 / GPIO PWM(0-20KHz) 8 VDD33 Power supply interface 3.3V 3.0-3.6V 9 GPIO 07 UART1_TXD / GPIO Communication Interface /115200 10 GPIO 06 UART1_RXD / GPIO Communication Interface /115200 11 GPIO 04 PWM4/ GPIO PWM(0-20KHz) 12 GPIO 03 PWM3/ GPIO PWM(0-20KHz) 13 GPIO 21 UART0_TXD / I2C_S_SCL / ADC1 / GPIO Log Interface 14 GPIO 22 UART0_RXD / I2C_S_SDA / ADC0 / GPIO Log Interface 15 GPIO 00 ADC3 / PWM / GPIO PWM(0-20KHz) 16 GND Grounded Note: The initial state of GPIO7 cannot be pulled down by the peripheral when the module is powered on, otherwise it may not be powered on. 5. Electrical parameters parameter Description Minimum value Typical value Maximum value Unit TS storage temperature -40 - 125 °C VI Supply voltage -0.3 - 3.6 V Electrostatic discharge voltage (human body model) -25°C - - 2 KV Electrostatic discharge voltage (machine model) -25°C - - 0.5 KV TA Operating temperature -20 25 80 °C VCC Operating Voltage 3 3.3 3.6 V VCC Working current 3.3V 10 - 400 mA RE706B WIFI Module product specification 7 VIH IO high level input 0.8 - VCC V VIL IO low level input -0.3 - 0.24 V VOH IO high level output 0.8 - VCC V VOL IO low level output - - 0.1 V Imax IO drive current - - 12 mA 6. RF performance 2.4G-TX: 2.4G-RX: 7. Antenna design considerations The module is an onboard antenna, and the following precautions need to be observed:  The WIFI module adopts the PCB onboard antenna to ensure the best antenna efficiency, and the distance between the metal part and the antenna area is kept above 15mm.。 Mode Channel Rate Power（dBm） EVM 11b(EVM<35%) 1 11Mbps 16.7 -31 11 11Mbps 16.8 -31 11g（EVM<-25） 1 54Mbps 14.1 -30 11 54Mbps 14.4 -30 11n_HT20(EVM<-27) 1 MCS7 13.6 -30 11 MCS7 13.9 -31 11n_HT40(EVM<-27) 3 MCS7 13.5 -30 9 MCS7 13.8 -31 Mode Channel Rate Sensitivity （dBm） 11b(PER<8%) 1 11Mbps -86 11 11Mbps -86 11g（PER<10%） 1 54Mbps -72 11 54Mbps -72 11n_HT20(PER<1 0%) 1 MCS7 -71 11 MCS7 -70 11n_HT40(PER<1 0%) 3 MCS7 -67 9 MCS7 -66 RE706B WIFI Module product specification 8  PCB should not be wired or copper coated in the antenna area, so as not to affect the antenna performance. Ensure that there is no substrate medium under or above the printed antenna; ensure that the surrounding of the printed antenna is far away from the copper sheet, so as to ensure the radiation effect of the antenna to the greatest extent 8. Production recommended furnace temperature curve Please carry out SMT patch according to the reflow soldering curve, the peak temperature is 245°C, and the reflow soldering temperature curve is shown in the following figure: RE706B WIFI Module prod…

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Reference No.: WTX21X01008856W Page 2 of 6 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn EXHIBIT 2 - EUT EXTERNAL PHOTOGRAPHS EUT View 1 EUT View 2

Reference No.: WTX21X01008856W Page 1 of 6 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn ANNEX EXHIBIT 1 - PRODUCT LABELING Proposed FCC ID Label Format FCC ID: 2AYCN-RE706 Specifications: The label shall be securely affixed to a permanently attached part of the device, in a location where it is visible or easily accessible to the user, and shall not be readily detachable. The label shall be sufficiently durable to remain fully legible and intact on the device in all normal conditions of use throughout the device’s expected lifetime. Proposed Label Location on EUT FCC ID Label Location

Reference No.: WTX21X01008856W Page 3 of 6 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn EXHIBIT 3 - EUT INTERNAL PHOTOGRAPHS Solder Board-Component View 1 Antenna View

1. MAXIMUM PERMISSIBLE EXPOSURE (MPE) Client Information Applicant: Shenzhen Water World Co., Ltd Address of applicant: No. 602, Block B, Digital Building, Garden City, NO. 1079, Nanhai Road, Shekou Subdistrict, Nanshan District, Shenzhen Manufacturer: Shenzhen Water World Co., Ltd Address of manufacturer: No. 602, Block B, Digital Building, Garden City, NO. 1079, Nanhai Road, Shekou Subdistrict, Nanshan District, Shenzhen General Description of EUT Product Name: 2.4GHz Wireless LAN Module Trade Name: / Model No.: RE706 Adding Model(s): / Rated Voltage: DC3.3V Software Version: V1.2.0 Hardware Version: V0.2 FCC ID: 2AYCN-RE706 Note: The test data is gathered from a production sample provided by the manufacturer. The appearance of others models listed in the report is different from main-test model OS-M375C4-V-R23WFCQ, but the circuit and the electronic construction do not change, declared by the manufacturer. Technical Characteristics of EUT Support Standards: 802.11b, 802.11g, 802.11n Frequency Range: 2412-2462MHz for 802.11b/g/n(HT20) 2422-2452MHz for 802.11n(HT40) RF Output Power: 17.48dBm (Conducted) Type of Modulation: DBPSK,BPSK,DQPSK,QPSK,16QAM,64QAM Quantity of Channels: 11 for 802.11b/g/n(HT20); 7 for 802.11n(HT40) Channel Separation: 5MHz Type of Antenna: PCB Antenna Antenna Gain: 1dBi 1.2 Standard Applicable According to §1.1307(b)(1) and KDB 447498 D01 General RF Exposure Guidance v06, system operating under the provisions of this section shall be operating in a manner that the public is not exposed to radio frequency energy level in excess limit for maximum permissible exposure. (a) 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 Times | 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 1500-100000 / / 5 6 (b) 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 Times | 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 1500-100000 / / 1 30 Note: f = frequency in MHz: * = Plane-wave equivalents power density 1.3 MPE Calculation Method S = (30*P*G) / (377*R 2 ) S = power density (in appropriate units, e.g., mw/cm 2 ) P = power input to the antenna (in appropriate units, e.g., mw) G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor is normally numeric gain. R = distance to the center of radiation of the antenna (in appropriate units, e.g., cm) 1.4 MPE Calculation Result WIFI Maximum Tune-Up output power: 18(dBm) Maximum peak output power at antenna input terminal: 63.10 (mW) Prediction distance: >20(cm) Prediction frequency: 2412(MHz) Antenna gain: 1 (dBi) Directional gain (numeric gain): 1.26 The worst case is power density at prediction frequency at 20cm: 0.0158 (mw/cm 2 ) MPE limit for general population exposure at prediction frequency: 1 (mw/cm 2 ) Result: Pass

Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn Page 1 of 63 TEST REPORT Reference No. .................... : WTX21X01008856W FCC ID ................................ : 2AYCN-RE706 Applicant ........................... : Shenzhen Water World Co., Ltd Address.............................. : No. 602, Block B, Digital Building, Garden City, NO. 1079, Nanhai Road, Shekou Subdistrict, Nanshan District, Shenzhen Product Name ................... : 2.4GHz Wireless LAN Module Test Model. ........................ : RE706 Standards .......................... : FCC Part 15.247 Date of Receipt sample .... : Jan.27, 2021 Date of Test........................ : Jan.27, 2021 to Feb.05, 2021 Date of Issue ..................... : Feb.05, 2021 Test Result ......................... : Pass Remarks: The results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Prepared By: Waltek Testing Group (Shenzhen) Co., Ltd. Address: 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China Tel.: +86-755-33663308 Fax.: +86-755-33663309 Tested by: Reviewed By: Approved & Authorized By: Mike Shi / Project Engineer Lion Cai / RF Manager Silin Chen / Manager Reference No.: WTX21X01008856W Page 2 of 63 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn TABLE OF CONTENTS 1. GENERAL INFORMATION ...................................................................................................................................4 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ...............................................................................4 1.2 TEST STANDARDS ...................................................................................................................................................5 1.3 TEST METHODOLOGY .............................................................................................................................................5 1.4 TEST FACILITY .......................................................................................................................................................5 1.5 EUT SETUP AND TEST MODE .................................................................................................................................6 1.6 MEASUREMENT UNCERTAINTY ..............................................................................................................................7 1.7 TEST EQUIPMENT LIST AND DETAILS .....................................................................................................................8 2. SUMMARY OF TEST RESULTS ......................................................................................................................... 10 3. ANTENNA REQUIREMENT ................................................................................................................................ 11 3.1 STANDARD APPLICABLE ....................................................................................................................................... 11 3.2 EVALUATION INFORMATION................................................................................................................................. 11 4. POWER SPECTRAL DENSITY ........................................................................................................................... 12 4.1 STANDARD APPLICABLE ....................................................................................................................................... 12 4.2 TEST SETUP BLOCK DIAGRAM ............................................................................................................................. 12 4.3 TEST PROCEDURE ................................................................................................................................................. 12 4.4 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 12 5. DTS BANDWIDTH ................................................................................................................................................. 13 5.1 STANDARD APPLICABLE ....................................................................................................................................... 13 5.2 TEST SETUP BLOCK DIAGRAM ............................................................................................................................. 13 5.3 TEST PROCEDURE ................................................................................................................................................. 13 5.4 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 13 6. RF OUTPUT POWER ............................................................................................................................................ 14 6.1 STANDARD APPLICABLE ....................................................................................................................................... 14 6.2 TEST SETUP BLOCK DIAGRAM ............................................................................................................................. 14 6.3 TEST PROCEDURE ................................................................................................................................................. 14 6.4 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 14 7. FIELD STRENGTH OF SPURIOUS EMISSIONS .......................................................................…

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Reference No.: WTX21X01008856W Page 4 of 6 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn EXHIBIT 4 - TEST SETUP PHOTOGRAPHS Conducted Emission Test Setup Radiation Emission Test Setup (Below 30MHz) Reference No.: WTX21X01008856W Page 5 of 6 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn Radiation Emission Test Setup (30MHz to 1GHz) Radiation Emission Test Setup (1GHz to 18GHz) Reference No.: WTX21X01008856W Page 6 of 6 Waltek Testing Group (Shenzhen) Co., Ltd. http://www.semtest.com.cn Radiation Emission Test Setup (Above 18GHz) ***** END OF REPORT *****