The fourth stage of the project had the following objectives:
1) Optimization of magnetic characteristics for the sensing elements from the perspective of improving their performance,
2) Development of a communication protocol designed for the transducer level,
3) Design of the central station for data collection, implementation of the: communication interface, data processing functions, data storage and data visualization options,
4) Development and implementation of the hardware modules employed to power the system using solar energy,
5) Development and testing of the area coordinator communication module,
6) Integration of data processing functions in the central server software architecture,
7) Design and implementation of the user interface used for data visualization and system interaction,
8) Testing and troubleshooting of the complete functionality for each system module,
9) Studies regarding optimal placement of the landslide surveillance system components in the landslide prone area.

All the nine objectives proposed for this stage have been fulfilled. The results of this stage are represented by: a functional model for the complete in depth landslide transducer, a functional architecture of the area coordinator employed to gather data from all surrounding transducers, and a user interface used to visualize data and interact with the surveillance system.

Regarding the first objective, an improved MAW has been obtained that will be used to build landslide sensors with a reduced manufacturing dispersion.

Regarding the second, third and fourth objectives, a communication protocol have been developed that integrates facile methods for network sensor communications and easy data transmission to the area coordinator. In this stage the final hardware and software architecture of the surveillance system has been established and implemented.

The fifth objective has been achieved by implementing the software and hardware architecture used to transmit data from the surveyed landslide area by means of a GSM Mode to the central server for storage and analysis.

The proposed objectives six, seven and eight have been achieved by integrating data processing functions; user defined data visualization options and advanced storage facilities into the interactive user interface found at the central server level.

The ninth objective has been achieved by means of a study conducted to establish the optimal placement of the landslide surveillance system components in the hazard prone area in order to implement a continuous robust monitoring of the landslide activity.

The dissemination of results was accomplished by: three published papers in Thomson Reuters indexed journals, 1 paper published in international databases indexed journals and 2 papers published in proceedings of indexed international conferences.