WIFI-LPT100-B, Low Cost WiFi Module

SKU: 14026
Part Number: WIFI-LPT100-B
Brand: Waveshare




UART WiFi Module, low cost, small form factor, external antenna


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 [email protected] online power consumption in various low-power modes
  • Small form factor: size of a coin

Functionality & Performance

  • Solution: MTK single stream [email protected], 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 [email protected] 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([email protected])
802.11g: +18dBm([email protected])
802.11n: +17dBm([email protected],MCS7)
802.11n: +17dBm([email protected],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

Quick Overview

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