WIFI-LPT100-B, Low Cost WiFi Module - WS

Tax included

WIFI-LPT100-B is a low cost UART WiFi module, nearly half size of the thumb, requires ultra low power consumption to keep working. It is an ideal choice for low flow communication situation.

Please consider the WIFI400 motherboard simplify the development.


If you have any questions on this product please feel free to contact us.

*Disclaimer: The images are merely illustrative.


WIFI-LPT100-B is a low cost UART WiFi module, nearly half size of the thumb, requires ultra low power consumption to keep working. It is an ideal choice for low flow communication situation.


  • Easy to use: just like a simple UART module (AT commands provided)
  • Ultra low power: min 32mA@3.3V online power consumption in various low-power modes
  • Small form factor: size of a coin

Functionality & Performance

  • Solution: MTK single stream WiFi@2.4GHz, ARM Cortex-M3
  • Wireless LAN protocols: IEEE 802.11 b/g/n
  • WIFI security algorithms: WEP/WPA-PSK/WPA2-PSK
  • Working modes: STA/AP/STA+AP (AP means WiFi hotspot, STA means terminal device)
    • AP mode: up to 3 devices
    • STA mode: server allows 5 connections
    • AP+STA mode: AP allows 3 clients
  • Multi network protocols: TCP/UDP/HTTP
  • Supports DHCP, to allocate IP automatically
  • Supports AT+ instructions set and Web configuration
  • Supports Transparent/Agreement transmission modes, with 1K cache
  • Supports configuring UART framing delay and data volume
  • Up to 460800bps baudrate
  • Supports Simple Config/Airkiss fast networking
  • Firmware is upgradable via web
  • Supports NTP datetime configuration
  • Supports UART heartbeat packet
  • Signal can pass through one wall
  • Communication distance: 200 metres with 3DB antenna (between two modules under open and wide environment)
  • Supports factory reset: pull-down the Reload IO port for 3s, restore the module to its factory settings immediately


  • Test software for WINDOWS, iOS, Android
  • Communication example source code for iOS, Android

Development Resources

Wiki : www.waveshare.com/wiki/WIFI-LPT100-B

Selection Guide

General Comparison WIFI-LPT100-B WIFI232-A2 WIFI232-B2
Suit for low flow high flow high flow
AP mode connections 3 32 32
STA mode connections 5 32 32
AP+STA mode connections 3 32 32
Power consumption ultra low high high
Interface 2.0mm, 1x10 2.0mm, 2x7 2.0mm, 2x7
Antenna external onboard external
Shield case ×
Dimension (mm) 22 x 13.5 25 x 40 25 x 40
Specifications WIFI-LPT100-B WIFI232-A2 WIFI232-B2
WiFi chip MTK single stream WiFi@2.4GHz Marvell WiFi (router solution, hardware AP)
Microcontroller ARM
Wireless protocol 802.11 b/g/n, 2.412GHz-2.484GHz
TX power 802.11b: +18 +/-1dBm(@11Mbps,CCK)
802.11g: +17 +/-1dBm(@54Mbps,OFDM)
802.11n: +15 +/-1dBm(@HT20,MCS7)
802.11b: +19dBm(Max.@11Mbps)
802.11g: +18dBm(Max.@54Mbps)
802.11n: +17dBm(Max.@HT20,MCS7)
802.11n: +17dBm(Max.@HT50,MCS7)
pass through one wall pass through three concrete walls under 57600 baudrate,
embedded PA, configurable power
RX sensitivity 802.11b: -85 dBm(@11Mbps,CCK)
802.11g: -70 dBm(@54Mbps,OFDM)
802.11n: -68 dBm(@HT20,MCS7)
802.11b: -89dBm (@11Mbps)
802.11g: -81dBm (@54Mbps) 
802.11n: -73dBm (@HT20,MCS7) 
802.11n: -71dBm (@HT40,MCS7)
Antenna external 3DB antenna onboard PCB antenna external 3DB antenna
Communication distance
(open environment)
200 metres 200 metres 280 metres
UART baudrate: 1200bps-460800bps baudrate: 300bps-460800bps
hardware flow: not supported hardware flow: supported
framing delay and data volume configuration: supported framing delay and data volume configuration: supported
transparent/agreement transmission: supported (1K cache) transparent/agreement transmission: supported (4K TCP cache, totally 1M cache)
Other interfaces - Ethernet (100M), PWM, GPIO
Connector through hole: 1x10, 2.0mm pin headers through hole: 2x7, 2.0mm pin headers
Operating voltage 3.0~3.6V 3.3~3.6V
Operating current 32~285mA 170~350 mA @ 3.3V
Temperature operating temperature: -40℃- 85℃, storage temperature: -45℃- 125℃
Dimension 22mmx13.5mmx9.2mm 25mmx40mmx8mm
AP mode supported, up to 3 devices supported, up to 32 devices
STA mode supported, server allows 5 connections supported, server allows 32 connections
AP+STA mode supported, AP allows 3 clients supported, AP allows 32 clients with route function
Security algorithms WEP/WPA-PSK/WPA2-PSK
Misc supports WPS supports route/bridge modes
Online mechanism - built-in watch dog and heartbeat mechanism to keep online
Firmware upgrade via web
User configuration AT+ instructions set, web page
Android/iOS terminal, Simple Config/Airkiss auto config Android/iOS terminal
Restore factory pull-down the Reload IO port for 3s, no worries for faulty setting
Electrical certification FCC/CE
Process standard RoHS



Weight: 0.002 kg

  1. WIFI-LPT100-B x1
  2. External antenna x1




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