N8-DS3604 is a 4.2-inch IoT e-ink display designed for flexible and energy-efficient content presentation. With a high-resolution three-colour e-ink screen (black, white, and red), it supports displaying text, images, and QR codes, making it suitable for diverse applications. The device enables remote and local content updates, supports up to 150 languages, and offers customisable display templates. Its ultra-low power consumption ensures a battery life of up to 5 years with minimal maintenance. Compatible with LoRaWAN® gateways and network servers, the N8-DS3604 integrates seamlessly into IoT ecosystems for remote management and bulk configurations.