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ESP8266 - WIFI to UART Remote Wireless Module

PKR 450.00
In stock
Quantity: 31
The ESP8266 WiFi Module is a self contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. The ESP8266 is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor.
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The ESP8266 WiFi Module is a self contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. The ESP8266 is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor. Each ESP8266 module comes pre-programmed with an AT command set firmware, meaning, you can simply hook this up to your Arduino device and get about as much WiFi-ability as a WiFi Shield offers (and that’s just out of the box)! The ESP8266 module is an extremely cost effective board with a huge, and ever growing, community.

This module has a powerful enough on-board processing and storage capability that allows it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, including the front-end module, is designed to occupy minimal PCB area. The ESP8266 supports APSD for VoIP applications and Bluetooth co-existance interfaces, it contains a self-calibrated RF allowing it to work under all operating conditions, and requires no external RF parts. There is an almost limitless fountain of information available for the ESP8266, all of which has been provided by amazing community support. In the Documents section below you will find many resources to aid you in using the ESP8266, even instructions on how to transforming this module into an IoT (Internet of Things) solution!


  1. 802.11 b/g/n
  2. Wi-Fi Direct (P2P), soft-AP
  3. Integrated TCP/IP protocol stack
  4. Integrated TR switch, balun, LNA, power amplifier and matching network
  5. Integrated PLLs, regulators, DCXO and power management units
  6. +19.5dBm output power in 802.11b mode
  7. Power down leakage current of <10uA
  8. Integrated low power 32-bit CPU could be used as application processor
  9. SDIO 1.1 / 2.0, SPI, UART
  10. STBC, 1×1 MIMO, 2×1 MIMO
  11. A-MPDU & A-MSDU aggregation & 0.4ms guard interval
  12. Wake up and transmit packets in < 2ms
  13. Standby power consumption of < 1.0mW (DTIM3)


  • Current Consumption:

The following current consumption is based on 3.3V supply, and 25℃ ambient, using internal regulators. Measurements are done at antenna port without SAW filter. All the transmitter’s measurements are based on 90% duty cycle, continuous transmit mode.

Mode Min
Transmit 802.11b, CCK 1Mbps, POUT=+19.5dBm              215                   mA     
Transmit 802.11b, CCK 11Mbps, POUT=+18.5dBm     197   mA
Transmit 802.11g, OFDM 54Mbps, POUT =+16dBm   145   mA
Transmit 802.11n, MCS7, POUT=+14dBm   135   mA
Receive 802.11b, packet length=1024 byte, -80dBm   60   mA
Receive 802.11g, packet length=1024 byte, -70dBm   60   mA
Receive 802.11n, packet length=1024 byte, -65dBm   62   mA
Standby   0.9   mA
Deep sleep   10   uA
Power save mode DTIM 1   1.2   mA
Power save mode DTIM 3   0.86   mA
Total shutdown   0.5   uA

  • RF Performance:

The following are measured under room temperature conditions with 3.3V and 1.1V power supplies.

Descriptions Min Typical Max Unit
Input frequency                                                         2412                     2484         MHz 
Input impedance   50   Ω
Input reflection     -10 dB
Output power of PA for 72.2Mbps 14 15 16 dBm
Output power of PA for 11b mode 17.5 18.5 19.5 dBm
CCK, 1Mbps   -98   dBm
CCK, 11Mbps   -91   dBm
6Mbps (1/2 BPSK)   -93   dBm
54Mbps (3/4 64-QAM)   -75   dBm
HT20, MCS7 (65Mbps, 72.2Mbps)   -71   dBm


  1. Smart power plugs
  2. Home automation
  3. Mesh network
  4. Industrial wireless control
  5. Baby monitors
  6. IP Cameras
  7. Sensor networks
  8. Wearable electronics
  9. Wi-Fi location-aware devices
  10. Security ID tags
  11. Wi-Fi position system beacons


  1. Baud rate at 115200 (try 9600, 57600 or 115200 as some devices are programmed to use different baud rate)
  2. x is the command


Set Inquiry Test Excute
AT+<x>=<…>                         AT+<x>?         AT+<x>=?           AT+<x>  
Set the network mode Check current mode   Return which modes supported    



  •  Commands:

carefully there are must be no any spaces between the " and IP address or port

Commands Description Type Set/Excute Inquiry Test Parameters and Examples


general test      basic





AT+RST restart
the module
basic - - - -
AT+GMR check                        
firmware version
basic - - - -
AT+CWMODE wifi mode wifi AT+CWMODE=<mode>  


AT+CWMODE=?     1= Sta, 2= AP, 3=both, Sta is the default mode of router, AP is a normal mode for devices
AT+CWJAP join the AP wifi AT+ CWJAP <ssid>
< pwd>                     


ssid = ssid, pwd = wifi password
AT+CWLAP list the AP wifi


AT+CWQAP quit the AP wifi


- AT+CWQAP=?  
AT+ CWSAP set the parameters of AP wifi

AT+ CWSAP= <ssid>,<pwd>,<chl>, <ecn>



ssid, pwd, chl = channel, ecn = encryption; eg. Connect to your router: AT+CWJAP="","helloworld"; and check if connected: AT+CWJAP?
AT+CWLIF check join devices' IP wifi AT+CWLIF - -



AT+ CIPSTATUS get the connection status TCP/IP


    <id>,<type>,<addr>,<port>,<tetype>= client or server mode

set up TCP or UDP connection

TCP/IP 1)single connection (+CIPMUX=0) AT+CIPSTART= <type>,<addr>,<port>; 2) multiple connection (+CIPMUX=1) AT+CIPSTART= <id><type>,<addr>, <port> -


id = 0-4, type = TCP/UDP, addr = IP address, port= port; eg. Connect to another TCP server, set multiple connection first: AT+CIPMUX=1; connect: AT+CIPSTART=4,"TCP","X1.X2.X3.X4",9999
AT+CIPMODE set data transmission mode TCP/IP AT+CIPMODE=<mode> AT+CIPSEND?  

0 not data mode, 1 data mode; return "Link is builded"

AT+CIPSEND send data TCP/IP 1)single connection(+CIPMUX=0) AT+CIPSEND=<length>; 2) multiple connection (+CIPMUX=1) AT+CIPSEND= <id>,<length>   AT+CIPSEND=? eg. send data: AT+CIPSEND=4,15 and then enter the data.

close TCP or UDP connection




Get IP address


set mutiple connection 

TCP/IP AT+ CIPMUX=<mode> AT+ CIPMUX?   0 for single connection 1 for multiple connection

set as server

TCP/IP AT+ CIPSERVER= <mode>[,<port> ]    

mode 0 to close server mode, mode 1 to open; port = port; eg. turn on as a TCP server: AT+CIPSERVER=1,8888, check the self server IP address: AT+CIFSR=?


Set the server timeout

AT+CIPSTO=<time> AT+CIPSTO?   <time>0~28800 in second  
+IPD received data        

For Single Connection mode(CIPMUX=0): + IPD, <len>:
For Multi Connection mode(CIPMUX=1): + IPD, <id>, <len>: <data>


  1. ESP8266 Wifi Schmatics Diagram here
  2. ESP8266 Wifi User manual here
  3. ESP8266 Wifi Support Forum here
  4. ESP8266 Wifi Diatance Range Video Tutorial here


  1.  1 X ESP8266 - WIFI to UART Remote Wireless Module


Part Number NA
Manufacturer Made in China
Product Availability In Stock
Weight (KG) 0.002500
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