The protection of seaports can be a complex and difficult process. The need for security across in an aquatic environment requires the most advanced electronic detectors. V-ALERT, GM Afcon’s electronic sensor, was developed with advanced technology that provides an effective response in both sea and reservoir environments. With a high degree of resistance to changing weather conditions, including water exposure, the detector can not only be installed on walls and fences around the harbor, but also on installations that are in continual contact with sea water. The V-ALERT has completed professional laboratory tests, proving its resistance to moisture and pressure to depths of 100 m underground.