All components used are automotive grade (AEC). Meaning that all of those tiny blocks on the modules are qualified to work in harsh conditions. From temperatures as low as -40°C up to +85°C the components keep working normal. The PCB design and choice of components are EMC-compatible.
We went trough a few iterations to create, from an engineering point of view, the ultimate product. Starting from a development board to finally build our own PCBs we came a long way to be satisfied.
Testing, testing and testingBefore releasing the modules, we did some endurance tests in an Audi S6 4G. Step by step features were added.