High Water Sensor
The USCG 46 CFR 28.250 & 182.530 compliant BG-HW (High Water Sensor) detects salt or fresh water and can be easily integrated into any vessel’s alarm system. Water in any compartment of a vessel is a potential crisis. Early warnings of water entering the hull or leaking from plumbing is extremely important for the safety of the vessel and passengers. The BG-HW is CE and ISO 8846 Marine Ignition Protection Certified, tested to ABYC-1500 standards. Patented technology.
How It Works
The BG-HW triggers an alarm when high water is detected, once connected to a BG-CP (Control Panel) or any alarm system. The BG-HW has a 12, 24, or 32 Vdc with 1 amp max alarm output.
The BG-HW is a solid-state device with no moving parts or float switches that can easily be damaged. With IP-68 rated durability, the BG-HW is made with rugged, non-corrosive ABS plastic. The sensor comes with a heavy-duty mounting bracket to attach to a bulkhead or frame with #8×0.75” 316 stainless steel screws. Heavy-duty 14 gauge marine grade wires connect to the BG-JBox (Junction Box) that should be mounted high on a bulkhead, keeping the connections dry and reliable. The BG-HW has two integrated sensors that ensure a reliable and accurate detection.

BGI Config App


Scan for devices via Bluetooth.


Set different modes of operation for Blue Guard devices.


Set custom names for connected devices.

BGI Sensor Config App

Detachable Mounting Bracket

Rugged, non-corrosive ABS plastic housing with the option to mount vertically or horizontally.

Device Mounting Bracket

Three Wire System

Heavy-duty 14 gauge marine grade wires, 6 ft long.

3 Wire System


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