SKU: S121Category:

Sixfab 3G – 4G/LTE Base HAT for Raspberry Pi

Rated 5.00 out of 5 based on 6 customer ratings
6 reviews
  • As soon as 3G-4G & LTE mini PCIe modules are inserted, this base HAT becomes a bridge between Raspberry Pi and the modem.
  • This cellular HAT provides simplified data connection for remote IoT projects across the globe.
  • Offers a high-speed LTE connection with low power consumption in a slim form factor with all necessary software for Raspberry Pi.
  • MiniPCIe module is required with this product. 


Sixfab 3G - 4G/LTE Base HAT for Raspberry Pi

435 in stock

Sixfab SIM

  • It's a single multi-IMSI SIM card that provides extensive worldwide coverage.
  • Easy to manage your device's connectivity through a API-powered platform.

  • Pay-as-you-go or shared data pools are available, check pricing here.


Key Features & Benefits

Global IoT Connectivity: Seamlessly link Raspberry Pi to Mini PCIe modem modules

Plug-and-Play Setup: Easily integrate with various Pi models (A+/B+/Pi 2/Pi 3/Pi 4/Zero)

Fast LTE Data: High-speed connectivity between modem with optimized power efficiency

Unlocked SIM Compatibility: Exposed micro SIM card slot for flexible data options

Certified & Ready: Pre-certified with FCC, CE, ROHS for hassle-free deployment.

Ideal for Development: Suitable for PoC, prototyping, and pilot production

Product Specifications

Best ForEdge computing projects requiring high-speed internet connectivity
RegionsGlobal or Regional mini PCIe modem compatibility
Max. Data Speeds150 Mbps (DL) / 50 Mbps (UL)
with CAT-4 LTE modems
PositioningGPS, GNSS with suitable modems
Electrical5V DC, 3.0 A
Operating Temp.-25°C to 70°C
Onboard InterfacesUS: FCC Part 15 Class B
CA: ICES-003 Class B

RoHS, Safety

Package Contents

Sixfab 3G-4G/LTE Base HAT for Raspberry Pi

Extra tall 40-pin GPIO stacking header

Short 40-pin GPIO Stacking Header

Right Angle Micro USB Cable

Note:Mini PCIe modem modules and antenna are not included.




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  1. Rated 5 out of 5

    Stefano (verified owner)

    Works very well with EC25 module on a Raspberry pi 3B+
    PPP connection very good in Italy with Vodafone carrier (APN:!
    Very important: Remove the PIN code of the SIM before using!

  2. Rated 5 out of 5


    Awesome hat.
    Using this hat with the EC25-E I get coverage where phones fail! I have used this without problems in the UK, FR, GER and the USA. I was not expecting it to work in the USA, but it did while using a UK Simm. Sixfab products are made very well.

  3. Rated 5 out of 5


    One of my favorite. Works with UC20G and EC25. Congrats guys.

  4. Rated 5 out of 5

    Tim Gardner

    Great Hat to work with Raspberry Pi for a mini-PCIe module for 4G connection. Really nice build quality. And will work with other modules too – not just the ones on the website.

  5. Rated 5 out of 5

    issDaemon (verified owner)

    Using this with the EC25-A, the sixfab power/ups hat and a Pi 4B+ and it works great! Another great product from sixfab!

  6. Rated 5 out of 5

    Michael L. Lewis (verified owner)

    works great! I use my setup as a Mobile WIFI hot spot. I am an over the road truck driver, and this has proven to be a lot cheaper than paying for internet access every night. I am looking however to start working with the GPS function of the device (EC25 for North America). I can get the raw data from the device, however, when testing the output while moving it only shows the originating data LAT and LONG even after driving 4-6 hundred miles. stopping and restarting the program fixes this, as does starting a separate instance in a new window interrupts the original and it updates then in the first instance of the program.
    I have looked for how to fix this issue, and would be grateful of some guidance, but as I said I use mostly for internet on the road and it is flawless.