The Teensy 4.1 is a powerful microcontroller equipped with a 600 MHz ARM Cortex-M7 processor, known for its tremendous computing power and versatility. This version features a built-in Ethernet port for reliable and fast network connections, making it ideal for IoT and industrial applications. Additionally, the lock function provides the ability to permanently protect the firmware against reading and unauthorized access, making the Teensy 4.1 particularly suitable for security-critical projects and the protection of intellectual property.