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Description
Smart Bilge Sensor
Monitor the water level in your bilge in real-time. Be alerted before water becomes a danger — protect your boat from sinking and water damage.
Sense4Boat Bilge Sensor
The Sense4Boat bilge sensor continuously monitors the water level in your bilge using two robust marine-grade floats on 3-meter cables. Install them at the desired height to detect any water intrusion, whether sudden or gradual.
Each high-level detection triggers an immediate alert to you, your emergency contacts, and your marina. The sensor also performs a self-diagnosis every 12 hours and transmits its health status to you.
Everything you need to protect your boat
A standalone sensor that monitors, alerts, and allows you to act before the situation becomes critical
Water in the bilge: a silent danger
Understand the risks to better protect your investment
Two types of risks to monitor
Rapid sinking: Every boat has numerous water outlets (sanitary, cooling systems, hull joints). In case of failure, water can flood the bilge very quickly. Without monitoring, a boat can sink in a few hours — even at the dock.
Progressive damage: A slow accumulation of rainwater or condensation in the bilge promotes mold growth, corrosion of electrical equipment, and material degradation. This damage, often invisible, can represent thousands of euros in repairs.
The Sense4Boat bilge sensor alerts you at the first sign of water intrusion — whether it's an emergency or a gradual accumulation — allowing you to act before the damage worsens.
Protect your boat in all situations
The bilge sensor adapts to all types of boats and configurations
Boat at dock or on mooring
Monitor your boat remotely throughout the winter season or during your long absences. Be alerted immediately in case of water intrusion, even hundreds of kilometers away.
Engine bilge and engine room
Install a float in the engine bilge to detect any cooling circuit leak, faulty bilge pump, or water ingress through hull fittings.
Two independent bilges
Use both floats to simultaneously monitor two distinct areas — forward bilge and aft bilge, or engine bilge and electrical compartment — with a single sensor.
Marina and yacht harbor
If your marina is a Sense4Boat partner, it also receives alerts and can intervene quickly on your boat in your absence to limit damage.
Be alerted immediately, everywhere
As soon as an abnormal water level is detected, you and your emergency contacts are notified simultaneously
Operational in less than 15 minutes
No electrical wiring, no central unit — simply install the floats at the desired height
Technical Specifications
| Feature | Value |
|---|---|
| Dimensions | 124 × 60 × 26 mm |
| Weight | 160 g |
| Enclosure protection rating | IP67 — dustproof and resistant to high-pressure water jets |
| Float protection rating | Permanent immersion — marine grade |
| Operating temperature | −20°C to +85°C |
| Power supply | Internal replaceable batteries (up to 5 years autonomy) |
| Number of floats | 2 independent floats included |
| Float cable length | 3 meters per float |
| Self-diagnosis | Every 12 hours — status report transmitted to the control center |
| Connectivity | NB-IoT (Narrowband Internet of Things) — telecom operator network |
| Buffer memory | Local storage in case of network absence — deferred sending upon reconnection |
| Diagnostic LED | LED indicator for operating status |
| Subscription included | 1 year — then €63/year |
| Product reference | S4B-G2-RC1-BIL-1 |
💧 A question about the bilge sensor?
Our nautical experts are available to advise you on the installation and configuration suitable for your boat.
Mon – Fri: 9am–12pm and 2pm–6pm | Nautical experts available