Xiao e WiFi Module
Contents
1. 12 A1 SOAP eo ELIT 12 22 12 IPP uuu u ima u E 13 TOI 200 aa maaa niu mM 13 32 MOGE uuu i uya u DOE 21 5 PRODUCT TRIAL sssssssssssssssssssssssssssssssssssa 29 Wireless Tag Technology Co Ltd http www wireless tag com c2 A N CO A SN wireless tag WT8266 S1 Xiao e WiFi Module Amendment record Change Test Board picture Lemme 2015 09 20 Update Change Figure 2 6 Schematics of Test Baseboard Change 4 2 1 and 4 2 2 description W l gt N CO AX Wireless Tag Technology Co Ltd http www wireless tag com wireless tag WT8266 S1 Xiao e WiFi Module 1 Term Description e That is wireless access point just like a central node of the wireless network Wireless router is a typical wireless access point e Station That is wireless terminal the terminal is a wireless network 2 Test Board Introduction 8266 51 provides specialized UART WiFi functional test board to facilitate the customers to test the Wi Fi module Via the test board it can simulate serial devices to access WiFi network and realize data transmission but also can simulate WT8266 S1 works as the main control chip to access data of other devices and control 2 1 Physical Map Fi2. SPI SPEED SPI MODE 2Mbit DETECTED INFO 8Mbit flash vendor v A0MHz 16Mbit FM 26 7MHz C QOUT flash devID 20MHz DIO S 4016h 18Mbit C1 QUAD 32Mbit C 80MHz crystal C 32Mbit C1 26 Mhz MAC Address MAC 1A FE 34 ED D7 5B STA 18 FE 34 ED D7 5B FINISH Figure 3 7 Program Download Complete Wireless Tag Technology Co Ltd http www wireless tag com 5290 wireless tag WT8266 S1 Xiao e WiFi Module 4 Software Testing of AT Version 4 1 Auxiliary Tool e Xiao e WiFi module WT8266 S1 e WiFi Test Board e Andriod4 O Version above e PC e Xiao e APP e 8266 configuration tool side 4 2 Test Environment WIFI module and mobile phone or PC need to be connected within the same network you can also connect to a router you can connect your phone to the module 4 2 1 SoftAP Mode Phone or PC and WIFI module on the router the phone or PC is connected directly to the router the module link to the router through AT CWJAP SSID PWD Mobile Terminal Xiao e WIFI Figure 4 1 SoftAP Network Connection Mode 4 2 2 Station Mode Phone or PC connected to the module the module needs to be set in server mode Wireless Tag Technology Co Ltd http www wireless tag com 12 3t 29 wireless tag WT8266 S1 Xiao e WiFi Module
3. AT CIPSERVER 1 6666 AT CIPSERVER 1 6666 no change OK Figure 4 8 Test Software Connection Mode LE Description Here the port number is 6666 later when test module with APP need to be consistent 6 Open the terminal device which needs to connect with the module connected to module WiFi network in WiFi settings Wireless Tag Technology Co Ltd http www wireless tag com 45290 wireless tag WT8266 S1 Xiao e WiFi Module Figure 4 9 APP Network Connection 7 Open the Xiao e APP in the terminal equipment in the customer terminal mode set the IP address consistent with the WiFi module address and port consistent with the WiFi module port number click the TCP Protocol and connect with the WiFi module n obra 192 168 4 3 mL 6666 UDPHHX Figure 4 10 APP IP Port Settings 8 After APP and WiFi module successfully connected APP will return the IP address and port number of the module Xiao eWiFi module test software PC end returns 0 CONNECT as Wireless Tag Technology Co Ltd http www wireless tag com 181 4290 wireless tag WT8266 S1 Xiao e WiFi Module shown below Melt 1 18192 168 4 3 6666pkD Figure 4 11 APP IP Port Settings q ESP8226i8il T ARIS Rebate BOSE ir 3Xd E mem NES 08 com pom E 47 8 EX 115220 7 1 v xm 4 Wa is i CONNECT Tes
4. WiFi network option When serial reception area display as figure 4 20 it means complete to join in the network 4 Esp8226 2 BOR 02 con sw usw i IRS HESS 192 168 20 106 ESP8266 vir WI cert vri sm EB HEE WPAZ PSK 9 Era BRARS RHR GRR KA SORRE gt gt OMER AT CHLAP CWLAP 3 FOCUSED 60 28 2 b2 90 36 60 1 5 CHLAP 4 ChinaNet czHL 71 94 67 7 24 03 047 1 16 CWLAP 4 UMI 85 ec 25 ca 03 e 42 11 86 CHLAP 4 nireless tag Ui 4 Ub CWLAP 3 xi aoewi ifi 40 a2 aB cd b8 1 05 3 13 TS 55 71 d9 ad 98 44 3 15 4CWLAP 4 TP LINK 40 401 7 62 48 15 04 5 54 40 6 28 CWLAP 4 YCX 401F T9 9c 21 6a 44 E da 6 25 CWLAP 4 pdkj s TO 17 2 80 10 23 4CWLAP 4 ChinaNet 3Gb2 T1 44 67 e7T 2 01 c0 6 11 81 80 89 17 99 42 25 CHLAP 4 wireless tag tenda 56 8 3 35 01 1 38 8 33 CWLAP 4 TP LINK XPTW 88 00 27 19 76 44 147 10 1 CWLAP 3 My WiFi 89 00 1 7a b9 35 48 11 25 gt ATE MARRE EB 18 a CWLAP 3 xiaoewifi 40 a2 a8 cd b8
5. miii lt 5 8226 12317177 SOBs mos gui 115200 v 1 T gt Pigs TORRE gt 192 168 0 102 mo 8000 ESP8266 SADE paga masa r IER E 2 Ea sa x www bai du com Ping x Eme mur VOS TAHRAN gt Figure 4 4 Test Software Module Connection 2 In common functions options please select Mode in working mode and click the Settings Button when serial receiving area shows OK it means the setting is completed Please refer to figure 4 5 H 1471 2 29 Wireless Tag Technology Co Ltd http www wireless tag com wireless tag WT8266 S1 Xiao e WiFi Module 4 5 8226 B F4 8 Rebate PORRE NEAT RBI BEAT com AT CYHODE CYHODE 2 115200 e Stt 1 s ox ATIGS AT CWMODE 2 Sin TSS THEO gi AT CHMODE 2 AT C RODE s 5 8266 Paca IPAR 2AP 1 EPMA www bai du com M is DREN Singer musa m 0 ari ame Cass Figure 4 5 Test Software AP Mode Setting 3 In the WiFi Mana
6. TRE NSERE Figure 4 28 Test Software Data Reception Station Mode Wireless Tag Technology Co Ltd http www wireless tag com 48 22 5 wireless tag WT8266 S1 Xiao e WiFi Module 5 Product Trial e Aliexpress store http www aliexpress com store 1784058 e Forum bbs wireless tag com e Group 214946279 eWiFi ESP8266 H A MABE e Support E mail technical wireless tag com Wireless Tag Technology Co Ltd http www wireless tag com 29 Ww F 29 Ji
7. Xiao e WiFi Module WT8266 S1 Extreme Open Small Easy User Manual Version 2 0 2015 9 20 SN wireless tag WT8266 S1 Xiao e WiFi Module Disclaimer and Copyright Notice Information in this document including URL address for reference may change without notice Document AS IT IS WITHOUT ANY WARRANTY including warranties of merchant ability for any particular purpose or non infringement guarantee and any proposal any guarantee of specification or sample mentioned in other place This document assumes no liability including liability for infringement of any patent behavior of the use of this information in the document produced This document is not to prohibit reverse speech or other ways to authorize any intellectual property permission whether express or implication Wi Fi Alliance logos are owned by all the Wi Fi Alliance All trade names mentioned in the text trademarks and registered trademarks are the property of their respective owners and are hereby acknowledged Note As the product upgrade or other reasons this manual is may change Shenzhen Wireless Tag Technology Co Ltd has right to modify the contents of this manual without any notice or warning This manual is only as a guide Wireless Tag Technology Co Ltd blind every effort to provide accurate information in this manual but the Wireless Tag blind manual does not ensure that there is no error all statements in this manual information and sugg
8. 1 05 3 13 Tin DEREN HAEE Figure 4 19 Testing Software Scan WiFi 4 5 226 LARS bate BORA sos co we usxo e 19 pags IFAS gt 192 168 20 106 5 8266 virium ees SSID xiaoe EB 12345asdfg 4 BAAR GREER PORK OMETR 62 48 15 04 5 54 40 6 28 4 YCX 401F 9 9c 21 5 6 25 4 pdkj sz 0 17 25 80710 ce 5 23 CWLAP 4 ChinasNet 36b2 1 d4 67 e7 2 01 c0 6 11 CWLAP 2 Tenda 014808 8 c8 3a 35 01 4b d8 6 20 CWLAP 4 TP LINK_401 I 81 80 89 17 99 T d2 6 25 4 wireless tag tenda 56 c8 3a 35 01 1c 38 8 33 CLAP 4 TP LINK XPYW 88 00 27 19 76 gt le 10 1 3 WiF 89 00 1 7a b9 35 48 11 25 CILAP 0 Starbucks 00 1 7 9 35 49 u 23 CHLAP 4 ChinaNet y53l 80 a ad 3d c0 09 14 Ar 20 DK AT CWJAP xi aoewifi T CWJAP xiaocewi fi 1 88 CONNECTED GOT JK ATR 396 duh 3135 Sto gt gt mat AT CWJAPZ xiaoewifi jiayou88 WIFI CONNECTED WIFI GOT IP T iayou88 OK ngA wisis IDO gt Figure 4 20 Tes
9. Transmission AP mode Figure 4 14 APP Data Receiving AP Mode 10 Send data to the module by the APP On PCtesting software you can view the data transmitted from the APP Wireless Tag Technology Co Ltd http www wireless tag com input WT8266 S1 in the input box click send A wireless tag W18266 S1 1 ifi WT8266 S1 WT8266 S1 Xiao e WiFi Module Figure 4 15 APP Data Transmission AP Mode 4 ESP82268it T BRIS bate ROSH 115200 L y t 1 v PS GE gt 192 168 20 106 B ma 8000 ESP8266 FADE ct FERR ZEER x EPA 162 0000 88 tust o 0 rr 7 agnam BASAR 6665 FERS PLEAS 180 218838 SOBRE NEST 0 CONNECT AT CIPSEND O 9 xiaoewifi AT CIPSEND O 9 OK busy s 9 bytes SEND OK IPD 0 9 WT8256 51 yd HET Recv 9 bytes SEND OK 0 8 18266 51 Figure 4 16 Testing Software Data Receiving AP Mode 4 3 2 Station Mode Module work as a station and connect to router mobile phone or PC connect to the same Wireless Tag Technology Co Ltd http www wireless tag com 21 i 2529 A wireless tag 8266 51 Xiao WiFi Module
10. local network mobile phone and module build up network communications so as to realize data exchange between module and mobile phone Test Environment lt 2 _ usB WiFi Test Xiao WiFi Phone Figure 4 17 Test System Figure of Station Setting Steps 1 The first step is the same to that of softAP mode 2 Common Functions option select Client Mode for module s Work Mode and click the Settings button serial port receiving area will display the following figure which means the setting is completed 4 ESP82268it I ERA bate POBRK RER AT CHMODE 1 4 11 eel gt AT CHMODE AT CWMODE Fi 8 m AT CWMODE 1 tCWMODE 1 TORRES gt OK AT CYMODE lt OK 192 188 20 106 CWMODE 1 ESP8266 GO RE gt f x 3 www baidu com RAK gt Rene VER i es rBHRIRIP ERAS ATE MAB Figure 4 18 Test Software Mode Setting Wireless Tag Technology Co Ltd http www wireless tag com 852211 JL 29 A wireless tag WT8266 S1 Xiao WiFi Module 3 In the WiFi Management option click Scan WiFi find existed WiFi network set the network s name and password that need to add
11. wireless tag 8266 51 Xiao e WiFi Module 4 8226 SR bate BORE SOBRE REAT MER gt gt NTEs OS com TT 138 AT CIPMUX 1 AT CIPSTART 0 172 21 35 2 6666 115200 1 BRO ATACIPMUX 1 0 CONNECT Iff TRREB gt CIPSTART 0 172 21 35 2 6666 rie 192 168 1 161 MA gh AT CTPSTART 0 172 27 35 2 6666 5 8266 pasa EE mut oem cus 172 21 35 2 6666 FRIA TP 172 27 35 2 eses us I big RSA FERS RS Figure 4 24 Test Software Server IP Port Settings 7 Sent data to server by the test software data via WiFi module enter data xiaoe WiFi in the transmission area and click AT Send button You can see the data from PC test software in APP receiving area ESP8226i8it I MRS Rebate ROR NHAT OER A Nm wifi ect EL 4 ATS AT CIPSEND 0 10 T xiaoe wifi 115200 gt HERD m AT CIPSEND 0 10 AT CIPSEND 0 10 ne Ow Test pad 10 bytes amp n ale ESP8266 RAK paes 1 RE L 1
12. 72 27 95 2 6666 SE Ter amem xiaoe wifi ESSE RARO HERS igni 1142 5878 Figure 4 25 Test Software Data Transmission Station Mode Wireless Tag Technology Co Ltd http www wireless tag com 26 3i 29 Ji wireless tag WT8266 S1 Xiao e WiFi Module xiaoe wifi xiaoe wifi Figure 4 26 APP Data Reception Station Mode 8 Server APP sends data to the module input data www wireless tag com in APP sending area click send button you can see the data sent from APP in receiving area www wireless tag com www wireless tag com Figure 4 27 APP Data Transmission Station Mode Wireless Tag Technology Co Ltd http www wireless tag com 2227 A wireless tag lt ESP82268i T API LITTLE n 192 168 1 196 5 8266 RADE ur SOR maes ne tek Sst Fine EPRA re 112 27 362 exe MEME o gt gt ESSE FURS 185 WT8266 S1 Xiao WiFi Module mmm MARRE wmm ATE S AT CIPSEND O 10 Recv 10 bytes OK IPD 0 20 www wireless t adi 0 20 www wireless tag con AT CIPSEND O 10 gt busy Recv 10 bytes SEND OK xiaoe wifi com REE xiaoe_wifi gt
13. DTATE parameters click START button splats change from Waiting to downloading which means program download started please refer to figure 3 6 ESP FLASH DOWNLOAD TOOL V1 2 FlashDownload RF InitConfig MultiDownload Download Path Config lt lt lt lt B l SPI FLASH CONFIG CrystalFreq CombineBin FLASH SIZE SpiAutoSet 26M Default AM bit a Wireless Tag Technology Co Ltd http www wireless tag com 28 10 SPI SPEED SPI MODE 2Mbit DETECTED INFO 8Mbit flash vendor a ME Alh FM C 26 7MHz QOUT flash devID 32Mbit 4016h QUAD 32Mbit crystal 32Mbit C1 26 Mhz C 20MHz DIO 16Mbit C1 C 16Mbit 80MHz DOUT m MAC Address Download lA FE 34 ED D7 5B STA 185 FE 34 ED D7 5B PORT comi BAUDRATE 115200 Figure 3 6 Program Downloading l l wireless tag WT8266 S1 Xiao e WiFi Module LT pescription e Xiao eWiFi module use a 32 Mbit external FLASH please pay attention when program e Design of the baud rate is recommended to use 115200 bps 4 n program software splats change from downloading to complete means the program download is complete please refer to figure 3 7 B ESP FLASH DOWNLOAD TOOL V1 2 1 T T lt lt l lt l SPI FLASH CrystalF E E j iin CombineBin 26M Default
14. Ps Router Xiao e WIFI Mobile Terminal Figure 4 2 Station Network Connection Mode 4 3 Test Steps 4 3 1 SoftAP Mode Module acts as a wireless access node in the network role mobile phones computers WIFI modules and other wireless access devices etc can be connected to the module as the Station formed into a LAN In this example module wireless connected with mobile phone PC terminal monitor the module s data transceiver situation via configuration software Test Environment Minitool xtaoeWiFi Phone Figure 4 3 SoftAP Test System Diagram Setting Steps 1 Open the testing software of Xiao eWiFi module the software will automatically recognize port numbers and module current mode the baud rate to 115200 Click Open serial port button the software will display in the receiving areas it indicates that the module has been successfully connected with the test software Wireless Tag Technology Co Ltd http www wireless tag com 18 xi FE 29 xi wireless tag WT8266 S1 Xiao e WiFi Module lt ESP8226iHit ARS Rebate 098 ans 115200 gt 815 FRO gt 192 168 0 102 m Bh sw 5 8266 Sane paga masa TIPAS Ls RAKES mi RE x E x ERES E vmm sem POBRE Riss gt gt Ris
15. b Cd IDE Tess 7 COM 31 LPT USB Serial Port COMI Figure 3 3 Device Management Serial Port Xi bo Wireless Tag Technology Co Ltd http www wireless tag com A wireless tag 8266 51 Xiao WiFi Module MME SEE SEM EBh H Hl e 8 FE AT 32Mbit flashEE xri HR png PNG 39 KB HE m 9 blank bin BIN File 4 KB 55 SEP boot v1 4 b1 bin BIN File 3 KB 5 esp init data default bin BIN File 1 KB z 9 user1 4096 new 4 bin BIN File 257 KB T Lenovo Recovery 8 CD J 4 F Figure 3 4 Executable File of Xiao e WiFi FlashDownload RF InitConfig MultiDownload Download Path Config ox3fc000 0x3fe000 Ea m ADDR m ADDR SPI FLASH CONFIG CombineBin SP SPEED DETECTED INFO 26 7MHz 20MHz 80MHz IDLE COM PORT comi gt BAUDRATE 115200 Figure 3 5 Program Tool V1 2 of Xiao e WiFi Wireless Tag Technology Co Ltd http www wireless tag com BIR F297 A wireless tag 8266 51 Xiao WiFi Module LT Description Program Place of File boot v1 4 b1 bin 0 00000 user1 4096 new 4 bin 0 1000 esp init data default bin Ox3fcOOO0 blank bin Ox3fe000 4 Import the files need to be programmed in program software Download Path Config and set SPI SPEED SPI MODE FLASH SIZE and BAU
16. estions do not constitute any guarantee of express or implication Symbol Conventions The following symbols may appear in this article they are defined as follows Text with this symbol indicates a potentially hazardous situation which if ignored could result in equipment damage Warning data loss performance degradation or unexpected results LII Text with this mark is the additional information of main body Description which is to emphasize and supplement Wireless Tag Technology Co Ltd http www wireless tag com B 2i 3k 29 V1 SN wireless tag WT8266 S1 Xiao e WiFi Module Contents 1 TERM DESCRIPTION s s 4 2 TEST BOARD INTRODUCTION 5 2 1 PHY SICA MAP 5 2 SAE uu u E u 7 3 PROGRAM GUIDELINES sssssasssssasaasassasasssas 7 3 1 AUXILIARY TOOL AND CONDITIONS 7 7 4 SOFTWARE TESTING OF AT VERSION 12 jl U 12 4 2 TEST
17. gement option configure SSID network name and password for module and click the Settings button serial port receiving area will show following figure it means setting is OK 4 ESP8226Hit L RAS 2 058 PORRE gt gt EER PHAR gt gt ER BROS Risk DE HHR HERD Fein m TIPER gt 192 168 0 12 OK ES P82 66 ATj S ATHCWSAP xi ace 12345asdfg 11 3 ATHCWSAP xi aoe 12345asdfg 11 3 pasa EE x AT CHSAP xi aoe 12345asd g 11 3 AT CWSAP xi aoe 12345 asdfe 11 3 ATj S AT CWMODE 2 AT CIMODE 8 12345asdfg 4 wireless tag CE O mio m SEXE MA RAAB GREK Figure 4 6 Test Software SSID Password Settings 4 In Network Parameters option read Address acquisition IP address of Wireless Tag Technology Co Ltd http www wireless tag com 15 290 A wireless tag 8266 51 Xiao WiFi Module module Note the IP address can be customized the user only need to enter custom IP values in the format of normal address and can change it by write operation after success it will return to OK 4 8226 Rebate mos com o 115200 1 Pi
18. gure 2 2 Front View of Test Board Wireless Tag Technology Co Ltd http www wireless tag com bo wireless tag WT8266 S1 Xiao e WiFi Module RST LED mode selection KEY xiaoe WiFi Figure 2 3 Explanatory Diagram of Test Board download mode Figure 2 4 download mode of Test Board normal mode Figure 2 5 normal mode of Test Board Xi bo Wireless Tag Technology Co Ltd http www wireless tag com wireless tag WT8266 S1 Xiao e WiFi Module 2 2 Schematics Figure 2 6 Schematics of Test Baseboard 3 Program Guidelines 3 1 Auxiliary tool and Conditions e Xiao e WiFi module CWT8266 S1 e WiFi Test Board e Xiao e WiFi Burn ToolsV1 2 e Program Copy USB Minitool E PC xtaoeWiIFi 3 2 Test Steps Figure 3 1 Test Logic Diagram 1 To build test environment according to figure 3 1 figure 3 2 Wireless Tag Technology Co Ltd http www wireless tag com a J N A wireless tag 8266 51 Xiao WiFi Module 2 Use jumped test board J1 and press the reset button please refer to figure 3 2 RST mode selection Figure 3 2 Physical Map of Test Board 3 Check the serial port on PC side open the Xiao WiFi burn tool V1 2 software and set up the serial port please refer to figure 3 3 and figure 3 4 npe GE THA SEA SSM 0 b 3 liming PC 9 Bluetooth
19. i IFAR 192 168 20 106 0 8000 ESP8266 BORE gt MARRE gt gt Ria CIPAP gateway 192 168 4 3 4CIPAP netmask 255 255 255 0 OK virt Pett DHCP RRS FTFFDNCP A HJDNCP STA STA Omo AP etnask 255 265 255 0 5 Figure 4 7 Test Software Read Write IP 5 n Network Application option in Transparent Transmission Settings select Multi Connection Mode set the port number for the module in Server Mode and click Open Service Wireless Tag Technology Co Ltd http www wireless tag com A wireless tag 4 82261 088 com 38 gis 115200 Ife RES 192 168 1 19 mo 8000 ESP8266 WT8266 S1 Xiao e WiFi Module BORE Omar EE o EAR Dus CIPAP ip 192 168 4 5 CIPAP gateway 192 168 4 3 CIPAP netmask 255 255 255 0 amp AT CIPSERVER 1 6666 FADE ite SAO Reed cmt HE meom x FERA XR x L IP mo 6666 o e 15 ARS estat Resim ATj S AT CIPMUX 1 E AT CIPMUX 1
20. t TCRRRS 192 168 20 106 8 8000 ESP8266 MADE petit ESA Seat FARRS IP 192 168 1 201 8000 SED 0 ov ARS ae ts 6656 HERES Sit RA Sit ATE 2 2 180 537 Figure 4 12 Testing Software IP Port Settings 9 Send data to the APP from Xiao e WiFi module testing software PC through WiFi module need to select Multi Connection in the transmission area Wireless Tag Technology Co Ltd http www wireless tag com 19m 29 A wireless tag a 82268 T BRS Rbate2 xen digi m IIFAR TORRES 192 168 20 106 5 8266 BA WBE PEA cri HE x SEBX 192 168 1 201 8000 PERR eso EE wee mr TS ARS 22185 ARS RO F BARS 81 885 038318 2188418 xiaoewifi WT8266 S1 Xiao e WiFi Module gt gt MEET gt SRS HELET 0 CONNECT 7 AT CIPSEND 0 9 xiaoewifi AT CIPSEND O 9 OK 5 9 bytes SEND OK Xlaoewifi REE xiaoewifi DEREN vs XERE rs 2128 RE 209 ills 820 R 0 1 Figure 4 13 Testing Software Data
21. t Software Join WiFi Wireless Tag Technology Co Ltd http www wireless tag com wireless tag WT8266 S1 Xiao e WiFi Module 4 Open the terminal device connect the terminal device to WiFi network firstly the network need to be consistent to that of WiFi module 17 25 WLAN xiaoewifi Figure 4 21 APP WiFi Settings 5 Open select server mode set the port to 6666 random setting consistent with the PC side click TCP Protocol to enter the receive and transmission interface Click the Start button in the upper right corner so that the terminal device successfully created a TCP server After successfully created the server will automatically obtain an IP address set a good server port before return Wireless Tag Technology Co Ltd http www wireless tag com 24 Ui tk 29 wireless tag WT8266 S1 Xiao e WiFi Module ez E 8 172 27225 2 6666 mL 6666 Figure 4 22 APP Server Settings TCPARS 1 172 27 35 2 6666 13r 172 27 35 2 6666 Figure 4 23 APP IP Port of Server 6 Select Network Applications select Multi Connection Mode in Transparent Transmission Settings and then enter the server s IP and port number in Client Mode and click the Multi Connection Mode After successful setting the serial receive area returns the following figure Wireless Tag Technology Co Ltd http www wireless tag com 25 Wi dt 29 Ju
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