Industrial-Grade LTE CAT 1 Expansion for Raspberry Pi Built for demanding environments, this 4G LTE CAT 1 HAT enhances Raspberry Pi with secure mobile connectivity. Powered by a Quectel module, it supports stable communication, making it suitable for industrial IoT, smart metering, fleet management, and unattended remote installations. https://iotstudioz.com/product/raspberry-pi-4g-lte-cat-1-hat-with-quectel-ec200u-cat1/