User's Manual

1
1. Introduction
1.1 Profile
The GWF-KM22 module operates in 2.4GHz ISM frequency band with low power consumption; it
applies a highly integrated MAC/BBP in the MT7681 chipset, support IEEE的802.11b/g/n standards with
1T1R technology.
This module supports TCP/IP， UDP protocol ， its low cost and low power consumption, easy using
characteristics make the wireless connection become easy and reliable.
The single side components mounted module provide 1 UART interface and 4 GPIO ports. The optional
on-board or external antenna easy the downstream RF hardware technology requirement. A set of future
provided serial AT commands can simplify software design, thus a normal, simple, cheap MCU can be
used to control the WiFi module easily.
The module includes a number of TCP/IP-based connectivity protocols enabling a low-cost,
low-complexity system to contain full-featured internet connectivity and reliable information exchange.
This module is mainly used in a multitude of smart home appliances and consumer electronics such as
remote control, thermostats, power socket, WIFI audio transmission, LED control, wireless sensor, etc
and other applications.
1.2 Features
 Supports 2.4GHz, 802.11b/g/n Client and AP mode
 Internal MCU development SDK supported.
 Smart WiFi configuration supported.
 Provide 1 UART and 4 GPIO ports.
 Support WEP,WPA2 encryption mode
 Selection Client and AP mode
 RF ON/OFF control, Sleep mode power management.
 Optional onboard antenna .