The GRID45-ST is a powerful MQTT tunneling module that allows OEMs to securely connect their serial-based devices to AWS IoT Core with minimal development effort. Designed to simplify cloud integration, the module connects to the host processor via UART and manages encrypted MQTT communication—removing the burden of embedded cloud stacks. Out of the box, the GRID45-ST supports a generic configuration ideal for evaluation and prototyping. For production deployment, our team offers custom firmware services to tailor the module to your AWS environment, including your IoT endpoint, client certificates, device identity, and topic structure. Basic Hardware Pinout Custom AWS Integration Available Need the module to work with your AWS account and provisioning flow? Grid Connect offers custom firmware support to pre-load your certificates, configure your AWS endpoint, and map publish/subscribe topics to your system. GRID45 Product Family: Learn more about the GRID45 product family, the ultimate multi-protocol solution for industrial automation. *protocol modules sold separately Contact Us to Get Started We’ll help you integrate the GRID45-ST into your solution and accelerate your time to market with secure, scalable AWS connectivity.