GOST Wireless Water Resistant Outdoor Motion Detector [GP-MSWR]Wireless Water Resistant Outdoor Motion Detector The motion sensor provides a compact and hard to detect security solution. Ideal for monitoring a boat's main entryway or corridor. Install on any wall or bulkhead for a well concealed layer of security. The sensor will push an alert to the boat owner upon unauthorized entry and can be programmed to sound an audible alarm.