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The SPOT Hug satellite-based GPS security system helps protect your boat from theft while delivering everyday peace of mind and emergency assistance when you need it. Virtual security perimeter around your boat detects unauthorized movement and notifies the Asset Monitoring Center, which conveys GPS location to nearby authorities. Daily status updates include GPS position and sensor alert status; connect the unit to additional sensors (not included) to monitor battery voltage, high water, fire and more. Hug combines boat security with the functions of the SPOT Satellite Messenger, including Check-in/OK and Help messages to friends and Track Progress feature. SOS function notifies the GEOS International Emergency Rescue Coordination Center of your location and retransmits the emergency signal every 5 min. Sensor alerts, Check-in/OK messages and Help messages can be sent via email or SMS text message; Track Progress uses Google Maps to show your movements. Online account profile lets you easily manage SPOT messages and contact lists. Easy-to-install SPOT Hug satellite-based GPS security system comes with a wireless key fob and keypad for managing functions and messaging.