Filters
Which monitor fits your system?
See your power at a glance — at the helm, on your phone, or from across the country. The hubs, displays, and sensors we set up every week.
Swipe the table sideways to see every column →
| Device | Type | Display | Connectivity | Best for | From |
|---|---|---|---|---|---|
| Victron Cerbo GX MK2 | System hub (GX) | Add a GX Touch | Wi-Fi / LAN / VRM (+LTE) | The brain that ties a Victron system together | $272.85 USD |
| Victron Ekrano GX | Hub + built-in screen | Built-in 7-inch | Wi-Fi / LAN / VRM | All-in-one hub and display | $619.65 USD |
| Victron GX Touch | Touchscreen for Cerbo | 5 / 7-inch | Via Cerbo GX | Add a screen to a Cerbo GX | $220.15 USD |
| Victron GlobalLink 520 | Cellular VRM gateway | Phone / VRM | 4G cellular, 5-yr SIM incl. | Simple remote monitoring without a full GX | $216.75 USD |
| Victron GX LTE 4G-A | Cellular add-on for a GX | Via the GX | 4G cellular (N. America) | Add off-boat remote access to a Cerbo | $199.75 USD |
| Roam Marine Monitor Hub | Standalone marine monitor | Phone app | Cellular + GPS | Bilge, battery & location alerts — no Victron required | $299 USD |
| RuuviTag Sensors | Wireless sensors | Phone / Gateway | Bluetooth (+Gateway) | Temp, humidity & motion — fridge, bilge, cabin | $39.49 USD |
Looking for a battery monitor or shunt (Victron BMV, SmartShunt)? Those are in battery monitors. This page also stocks the mounts, antennas, and GX accessories to finish the install — just ask if you need a hand matching them.
How to choose, in three questions
Screen or phone, local or remote, Victron or mixed — answer these and you'll know what to buy.
On-board screen, or just your phone?
If you want a gauge at the helm, add a GX Touch to a Cerbo, or get the Ekrano GX with a screen built in. If you're happy checking your phone, a Cerbo on its own (or a GlobalLink) shows everything in the free VictronConnect and VRM apps.
Local only, or remote when you're away?
At the dock or on Wi-Fi, a GX device streams to the VRM cloud for free. To watch the boat from home — bilge, batteries, temperature — add cellular: a GX LTE on a Cerbo, the all-in-one GlobalLink, or the standalone Roam hub.
Victron system, or mixed/standalone?
A Cerbo or Ekrano GX is the heart of a Victron system and talks to your inverter, MPPT, and lithium. For a non-Victron or simple boat, the Roam hub and RuuviTag sensors monitor batteries, bilge, and conditions on their own.
Why buy monitoring from Blue Marine
True Blue Victron distributor
Plus Ruuvi, Roam, and MG — warranty and setup support handled by us, not a ticket queue.
ABYC-certified advisors
We set up the GX, VRM, sensors, and alarms with the rest of your system — not just a box on a shelf.
Free US shipping over $49
Fast shipping from Seattle and 60-day returns on non-lithium items.
Real people, real boats
Call (800) 628-6306 Mon–Sat — we monitor real boats and rigs every day.
Not sure what monitoring you need?
Tell us what's in your system and how you want to watch it — helm screen, phone, or remote — and we'll spec the GX, display, and sensors to match.
Monitoring FAQ
What's a GX device, and do I need one?
A GX device (like the Cerbo GX or Ekrano GX) is the hub of a Victron system — it reads your inverter, MPPT, battery monitor, and tanks, shows them on one screen or app, and streams to the free VRM cloud. If you have more than one Victron component, a GX is what makes them act as one system.
Cerbo GX or Ekrano GX — which?
Same brains; the difference is the screen. The Cerbo GX has no display, so you pair it with a GX Touch or just use your phone. The Ekrano GX builds a 7-inch touchscreen into the unit. Choose Ekrano for a clean all-in-one, or Cerbo if you want to place the screen separately (or skip it).
How do I see my system on my phone?
Two free Victron apps: VictronConnect talks to nearby gear over Bluetooth, and VRM shows your whole system from anywhere once a GX device is online. RuuviTag sensors and the Roam hub each have their own apps.
How do I monitor the boat when I'm away from it?
You need internet on board. At a dock, Wi-Fi works; away from shore power, add cellular — a GX LTE modem on a Cerbo, the all-in-one GlobalLink 520 (cellular VRM gateway with a 5-year SIM), or the standalone Roam Marine Monitor Hub for bilge, battery, and GPS alerts.
Do I need a GX Touch screen?
Only if you want a dedicated display at the helm or panel. Many owners skip it and use VictronConnect or VRM on their phone. If you do want a screen, the GX Touch comes in 5-inch and 7-inch, wall or flush mount — or get the Ekrano GX with the screen built in.
What can RuuviTag sensors do?
They're small wireless sensors that report temperature, humidity, air pressure, and movement over Bluetooth — handy for the fridge, freezer, bilge, or cabin. Add a Ruuvi Gateway and you can read them from anywhere over the internet.
Where are battery monitors and shunts (BMV, SmartShunt)?
Those live in our battery monitors collection. A shunt measures exact amps in and out and true state of charge, then reports to your GX or phone — a great companion to anything on this page.