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Your present location:Home >> IoT Solutions >> AFM203T RTL8720CM WIFI bluetooth module
  • Product Name: AFM203T RTL8720CM WIFI bluetooth module
  • Code: AFM203T
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AFM203T is a low-power and small-volume embedded Wi-Fi + Bluetooth module. It uses Realtek's highly integrated wireless RF chip RTL8720CM and a small number of peripheral devices. The chip has built-in 802.11b / g / n Wi-Fi wireless Built-in ARM Cortex-M4F processing core, with large capacity (FLASH: 2MB ROM: 384KB) storage space (FLASH: up to 128MB), running space (SRAM: 256KB) and rich peripheral resources, RTOS system platform in MCU And the lightweight LWIP protocol, through packaging and optimization of the SDK, can meet a variety of embedded wireless communication applications.

The official designated development board that matches the AFM203T module is RTL8720CM-EVB.




Technical details:

ARM Cortex-M4 processing core, clocked at 100MHz

3.3V, 5V DC single power supply

Package: Stamp Hole

Size: 24(L) × 15(W) × 3.0(T)mm

AFM203T structure




WLAN, Bluetooth parameters

Standard: 802.11 b / g / n 1x1
Transmit power: 11b: 18dBm / 11g: 16dBm / 11n: 15dBm
Receiving sensitivity: 11b: -93dBm / 11g: -82dBm / 11n: -76dBm
Communication rate: 11Mbps @ 11b / 54Mbps @ 11g / 150Mbps @ 11n
Working mode: STA, AP, STA + AP, Buletooth
Hardware encryption: WPA / WPA2
Antenna: external antenna, IPEX antenna interface, on-board antenna





Complete IoT solution (low-level development, cloud services, APP)
Support AT + application set secondary development
Support secondary development of C-SDK package
Support OTA wireless upgrade
Support Bluetooth smart networking, Airkiss WeChat distribution network function
Industrial-grade application design, 4-layer PCB design, performance consistency guarantee
FCC / CE certification, RoHS compliant



Software Features

Built-in IPV4 / IPV6 protocol stack
Built-in FreeRTOS system
Supports low power BLE 4.0
Supports HTTP / HTTPS (SSL) encryption
Support Ella Cloud, Amazon, Cloud, JD Cloud, Alibaba Cloud
Support customized private cloud or user private cloud docking
Support secondary development, secondary integration





Module model




PCB on-board antenna


IPEX external antenna


RF-Pin external antenna





Intelligent electrical outlet
Industrial control
Intelligent home appliances
Internet of things applications
Thermal printer
LED control card






File Type

Description (Downloadable)



Update Date


Started guide 1.0 English 2020-10-16 104KB

Burn tool

1.0 English 2020-10-16 258KB