BMBS850 BM800 Boat Monitor 12-48V with Bilge Sentry Sensor Boat Monitor Bilge Sentry Battery and Bilge Pump Cable Easy Installation Runs 24/7 without drawing power from your boat. The Boat Monitor is the system's brain - where data from your boat is continually collected and sent to your app. The system runs on an internal battery with up to four months of power and charges itself every time your boat batteries are being charged. In other words, it is completely maintenance-free and will monitor your bo

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