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Home > About Dongle

About Dongle

2G:​At present, some countries or regions have closed 2G GSM. Before purchasing, please confirm that still using GSM in your region, otherwise you will not be able to use it. The countries that have confirmed the cessation of GSM include: Australia, South Korea, Japan, United States, Canada (unable to use)Please contact customer service to recommend 3G or 4G products for you.
3G:​Suitable for global 3G, Before purchasing , it is necessary to confirm that the local 3G network can be used, otherwise you will not be able to use it.
4G:
Because the 4G frequency band is different in different countries or regions, when placing an order, please indicate the country in which the product is used. If there is no indication, we will select the corresponding frequency band model based on the country where the shipping address is located.
The product EC20/EC200A module are not suitable for use in the United States, Canada, or Japan. If you need to use it in these countries, please purchase the EC25 product from our store.

Product Feature
Name SMS Dongle / Wireless internet modem
communication interface USB
Chipset Quectel M26 / M35 / UC20 / UC200T / EC20 / EC200A / EC25
Function STK / AT Command / TCP/IP / Data / SMS / IMEI / MMS / Email / GPRS / GPS / USSD
Frequency EC25-EUX /EC200A-EU : (Asia, Europe,Africa, the Middle East)
LTE FDD: B1,B3,B7,B8,B20,B28A
LTE TDD: B38,B40,B41
WCDMA: B1,B8 (900/2100MHz)
GSM: B3,B8 (900/1800MHz)

EC25-AFX : (United States and Canada)
LTE FDD: B2/B4/B5/B12/B13/B14/B66/B71
WCDMA:B2/B4/B5 (1900,1700,850MHz)

EC25-AUX /EC200A-AU : (Australia, New Zealand and Latin America)
LTE FDD: B1/B2/B3/B4/B5/B7/B8/B28
LTE TDD: B40
WCDMA: B1/B2/B4/B5/B8 (850,900,1700,1900,2100MHz)
GSM:B2/B3/B5/B8 (850,900,1800,1900MHz)

EC25-J: (Japan)
LTE FDD: B1/B3/B8/B18/B19/B26
LTE TDD: B41
WCDMA: B1/B6/B8/B19

EC20 /EC200A-CN: (Part of the country in Asia, Europe, Africa, the Middle East)
LTE FDD: B1/B3/B8
LTE TDD: B38/B39/B40/B41
WCDMA: B1/B8 (900,2100MHz)
TD-SCDMA: B34,B39 (900,2100MHz)
EVDO CDMA: BC0 (800MHz)
GSM: B3,B8: (900,1800MHz)

UC20/UC200T
WCDMA: B2/B3,B4,B5,B8 (850,900,1700,1900,2100)
GSM: B2/B3/B5/B8 (850,900,1800,1900MHz)

M26/M35: 
(Suitable for all countries with GSM, if your country does not have GSM network, it will not be available, such as the United States, Canada, South Korea, Japan, Australia)
GSM: B2/B3/B5/B8 (850,900,1800,1900MHz)
Operating System Win all, Linux, android
SIM interface Default is 2FF Mini SIM (15mm*25mm), Optional conversion to 1FF (big size IC card)
Working voltage DC 5V
TTL voltage DC 3.3V
Warranty One Year

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The main function of the product is High-Speed internet access and Internet of Things apply, SMS or voice notification reminders.


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If you need to use it in bulks, need to purchase UART HUB with TTL=3.3V. Our store has HUB with 4/8/16/32 channels available for purchase

TTL UART USB2.0 HUB for Raspberry Pi/ Modem/ COM ports, provides more USB capability to your Pi, what's more, it features USB to UART converter for easy serial communication.

It can work with various versions of the Pi, and the size of the board is designed to perfectly fit the Zero / Zero W / Zero WH.

The product adopts 5V input power supply, compatible with USB power supply, and has an output TTL level of 3.3V. It can be directly connected to various GSM 4G LTE MODEMs, DONGLE, and microcontrollers.

USB HUB HAT Features

  • USB Ports, compatible with USB2.0/1.1
  • Onboard USB to UART, with enable / disable switch, convenient for Raspberry Pi serial debugging and avoiding conflict
  • Onboard multi indicators, for monitoring the status of power, USB to UART TTL3.3V COM ports, and each USB port