Bundle price
€
123456
No extras selected yet
+
Bilge water sensor
€
55543
Sentinel Bundle
SafeGuard
Instant alerts for the most common problems that occur while your boat is unattended in a marina or on a mooring.
YOUR BUNDLE. YOUR WAY.
PRE-CONFIGURED.
READY TO upgrade.
Review everything included in your bundle, then add sensors and accessories to create the perfect setup for your boat. As you customize your bundle, your configuration and subscription update automatically.
standard
safeguard
what's in the box
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Boat Monitor BM-50 LITE
Included
Best for Smaller leisure boats, open deck boats, RIBs, and charter fleets.
Shore Power Sensor
Included
Monitor shore power connection status and receive immediate alerts if power is disconnected.
Bilge High Water Sensor
Included
Detect rising bilge water levels before they become serious problems.
Door / Hatch Sensor
Included
Know immediately when doors, lockers, or hatches are opened.
Add MORE to your
·
SafeGuard
monitor more battery banks
(1 included in the bundle)
1
/
2
Add Power input connection kit
+€89.00
Add Power input connection kit
2 left
Power Input Connection Kit
SENT-BAT-PIK
gid://shopify/ProductVariant/58550454747461
Required to safely connect and monitor an additional battery bank. Includes fuse holder and fuse.
boost Functionality with Extra Sensors
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7
Wireless Door/Hatch Magnetic Sensor White
SENT-WL-HATCH-WHT
gid://shopify/ProductVariant/58550457041221
Know immediately when doors, lockers, or hatches are opened.
Wireless Anti Theft Sensor
SENT-WL-THEFT
gid://shopify/ProductVariant/58550455501125
Adds an extra layer of theft protection with movement and tamper detection while your boat is unattended.
Wireless Shore Power Sensor
SENT-WL-SHORE
gid://shopify/ProductVariant/58550455009605
Monitor shore power connection status and receive immediate alerts if power is disconnected.
Wireless Dry Contact Sensor
SENT-WL-DRY
gid://shopify/ProductVariant/58550456385861
Acts as a wireless bridge for compatible wired sensors, such as a bilge float switch, transmitting their signals to the Boat Monitor for real-time monitoring and notifications.
Wireless Temperature & Humidity Sensor
SENT-WL-TEMPHUM
gid://shopify/ProductVariant/58550455992645
Monitor environmental conditions onboard, including temperature and humidity levels.
Wireless Door/Hatch Magnetic Sensor Black
SENT-WL-HATCH-BLK
gid://shopify/ProductVariant/58550456779077
Know immediately when doors, lockers, or hatches are opened.
Wireless Motion Sensor
SENT-WL-MOTION
gid://shopify/ProductVariant/58550457205061
Detect movement inside the cabin while your boat is unattended.
Boost precision
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External GPS Antenna 6m
SENT-ANT-GPS-6M
gid://shopify/ProductVariant/58550457532741
External GPS antenna with a 6-metre cable for reliable positioning where the monitor has no clear view of the sky.
External GPS Antenna 3m
SENT-ANT-GPS-3M
gid://shopify/ProductVariant/58550457401669
External GPS antenna with a 3-metre cable for reliable positioning where the monitor has no clear view of the sky.
SafeGuard
You save €116
1-year plan SML included
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TOTAL
€
TOTAL
Choose installation type
Self install
Professional installation
Recommended
Professional installation and setup by a cerified Sentinel Partner.
· Availability depends on your location and local certified Sentinel Partners.
· Full product warranty
Request a non-binding offer →Prefer to fit it yourself?
· Step-by-step installation videos
· Detailed activation guides
See installation videos →Please choose an installation option to continue.
After year one
€
SHOP
/yr
Subscription plan keeps your boat connected worldwide — real-time monitoring & alerts.
You save €116
compared to
purchasing
each part individually
Orders are shipped from the EU. Outside of EU Customs duties and taxes may apply.
Buying as a business? Enter your company and VAT details at checkout. The full retail amount may be temporarily authorized. When your order is processed, we’ll verify your business details and, if eligible for VAT-free purchase, charge only the net amount.
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Select addons
S PLAN
Included in your bundle. Renews at €150/year from year two.
Need a larger setup?
You’ve reached the maximum number of devices supported by this subscription. Our experts can help you design a custom solution.
Contact an Expert →You’ve reached the maximum of 3 battery banks this Boat Monitor can monitor.
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INSTALLATION OPTIONS
Installation
Your choice.
Choose the installation option that fits your boat, your skills, and your schedule.
PROFESSIONAL INSTALLATION
Installed and configured by certified Sentinel Partners.*
- Professional installation and setup
- Full system configuration
- Full product warranty
Recomended
INSTALL IT YOURSELF
Prefer to install it yourself?
- Step-by-step installation videos
- Detailed activation guides
*Professional installation availability depends on your location and local certified Sentinel Partners.
COMMON RISKS WHEN YOU’RE AWAY
WHAT
SafeGuard
CAN PROTECT YOU FROM
No checking, no wondering. Sentinel watches continuously and reaches out the instant something needs your attention — whether you're on the dock or a thousand miles away.
Shore Power Lost
Disconnected or tripped — you know before the batteries do.
Battery Dropping
Voltage falls below the threshold you set.
Water in the Bilge
Rising water detected early — not after the damage is done.
Unexpected Entry
A door, locker or hatch is opened when it shouldn’t be.
Boat Has Moved
Position changes the moment it shouldn’t be drifting.
No guesswork. No surprises.
Why boat owners choose
SafeGuard
Real reasons owners rely on Sentinel — and what it means for your boat day to day.
- Avoid costly battery failures
- Detect problems before they become expensive repairs
- Stay informed while your boat is unattended
- Know immediately when something requires attention
- Enjoy greater peace of mind wherever you are
NOT QUITE WHAT YOU’RE LOOKING FOR?
LET’S FIND THE PERFECT SETUP
Explore our complete bundle range or request a custom configuration tailored to your boat.
FAQ
Still deciding?
Buying as a business?
If you’re purchasing a Sentinel bundle as a business, simply configure your bundle as usual and proceed to checkout. Enter your complete company and VAT details in the billing information.
When you place your order, your payment provider may temporarily authorize the full retail amount, including VAT. This is only an authorization — the final amount is determined before the payment is captured.
Our back office team will review the company and VAT information provided with your order. If your business details are successfully verified and the purchase qualifies for VAT-free treatment, we will capture only the net amount. The remaining authorized amount will not be charged.
Example:
Retail price including VAT: €1,200
Eligible business price excluding VAT: €1,000
Your payment method may initially show an authorization of €1,200. Once your business details have been verified, Sentinel will capture only €1,000.
If the company or VAT details cannot be verified, or the transaction does not qualify for VAT-free treatment, the applicable VAT will be charged.
How does the purchase process work?
There are two ways to purchase a Sentinel solution, depending on your needs.
Bundles
If you’re looking for a complete, ready-to-install solution, you can purchase one of our Sentinel bundles directly through our online store. Simply choose the bundle that best fits your boat and complete your purchase online.
Custom Solutions
If you have specific requirements or would like to create a custom configuration, our team can help. Simply contact us using the enquiry form, and one of our experts will guide you through the available options, recommend the right hardware and sensors, and prepare a tailored proposal for your boat.
Any proposal provided by our team is completely non-binding, allowing you to explore the best solution before making a decision.
I have specific needs and none of the bundles exactly match what I’m looking for. What can I do?
Absolutely. While our bundles are designed around the most common boating needs, they’re not the only way to build a Sentinel solution.
If none of the available bundles match your requirements, simply contact our team through the enquiry form. A Sentinel expert will help you select the right Boat Monitor, sensors, integrations, and subscription plan to create a solution tailored to your boat and how you use it.
The consultation and proposal process is completely non-binding, allowing you to explore the available options before making a decision.
Is my boat compatible with Sentinel?
Sentinel is designed to work with most modern yachts (20ft–90ft), integrating with:
- NMEA 2000 systems (engine monitoring, fuel tracking, etc.)
- Standalone sensors (battery, shore power, bilge, door/hatch security)
- Digital switching systems (CZone, EmpirBus, etc.)
Not sure about compatibility? Contact us at info@sentinelmarine.net (or via Contact Form) for a free assessment.
What are the benefits of using Sentinel?
Owning a boat should be about freedom and adventure—not stress over unexpected failures, security risks, or maintenance surprises. Sentinel ensures that your boat is always safe, ready, and within reach, no matter where you are.
Peace of Mind, Always
- Never worry about battery failures, water intrusion, or unauthorized access—Sentinel alerts you the moment something needs your attention.
- Feel confident knowing that your boat is monitored 24/7, even when you’re miles away.
- Never worry about battery failures, water intrusion, or unauthorized access—Sentinel alerts you the moment something needs your attention.
- Feel confident knowing that your boat is monitored 24/7, even when you’re miles away.
Stay Connected to Your Boat, Anytime
- Track your boat’s location, power levels, and onboard systems in real time from your smartphone.
- Enjoy the reassurance of geofencing alerts—if your boat moves unexpectedly, you’ll know immediately.
More Time on the Water, Less on Maintenance
- Forget about unexpected breakdowns—Sentinel helps you track maintenance schedules and engine hours.
- Smart reminders ensure your boat is always ready for your next adventure.
Relive & Share Your Journeys
- Automatically log your trips and share your sailing experiences with friends and family.
- Every journey is stored in your digital logbook, creating a timeline of your adventures.
The Ultimate Boating Experience
Sentinel is more than a security system—it’s your personal boat assistant, making ownership effortless and giving you more time to enjoy the water.
Want to experience it yourself? Discover more at Sentinel for Boat Owners.