I. Introduction
Forest and land fires in Indonesia have become annual environmental crises. In June to October 2015, the Indonesia land was burned about 2.6 million hectares [1]. Fires cause environmental damage and many financial losses, especially if it occurs in community settlements. Therefore, an early warning system is needed to detect the presence of fire. The existing alarm system uses optical, heat, and ion sensors that can work well and efficiently but only detect fires in confined spaces and limited range.