LoRa communication technology has become a key enabler for long-range, low-power IoT connectivity. This article provides a clear and practical overview of how LoRa works, explaining its core principles, network architecture, and energy-saving mechanisms in simple terms. It also explores real-world application scenarios across smart agriculture, smart cities, industrial IoT, and security systems. For businesses seeking reliable wireless data transmission in distributed and remote environments, the article highlights how industrial-grade LoRa data transmission terminals support scalable, cost-effective IoT deployments.