<![CDATA[Landslides are one of the natural disasters that often occur in Indonesia, especially in highland areas and slopes with steep inclines. Landslides can cause serious impacts, such as loss of life, damage to infrastructure, and significant material losses. Indonesia, located in the equatorial region, has relatively high rainfall, which increases the potential for landslides, especially in areas that have experienced deforestation and unstable soil conditions. Therefore, a reliable early warning system that can quickly detect landslides is needed to reduce the risk of disasters. This study aims to design and build an ESP32 microcontroller-based landslide movement warning system with data communication support using LoRa technology. The system is designed using a mechanical pull switch sensor as an initial detector of ground movement. When the pull switch is pulled or disconnected, the ESP32 microcontroller will process the change in condition and immediately activate a siren and rotating light as an early warning at the location. The warning information is also sent to the receiving unit via the LoRa E220 module without relying on cellular networks or internet connections. The test results show that the system is able to respond quickly to ground movement and provide clear warnings. LoRa E220-900T22D communication can work well at an effective distance of up to ±900 meters in open areas. Based on these results, the designed system is considered simple, responsive, and suitable for implementation as an early warning system for landslides in disaster-prone areas with limited communication infrastructure.]]>
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