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Siren 3 Plus Main Device

Regular price




The Siren 3 Plus is Siren Marine’s latest tech - a feature rich Connected Boat® Monitoring System for every boater. Together with the Siren Marine Mobile App, our Smart Boat Monitoring System puts your boat in the palm of your hand 24/7.

Install the Siren 3 Plus on your boat to monitor and track multiple critical systems such as battery levels, bilge pump activity, water levels, shore power status, engine performance, temperature, location & more right on the App.*

Siren 3 Plus Install Guide
Siren 3 Plus Wiring Cable 1 Diagram
Siren 3 Plus Wiring Cable 2 Diagram
NMEA 2000 Connection Diagram
App Guide
Wireless Sensor Guide
CZone Remote Control User Guide

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*The Siren 3 Plus requires a subscription plan to send unlimited data between the device and the Siren Marine App.
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Install the Siren 3 Plus on your boat to monitor and track multiple critical systems such as battery voltage, bilge pump activity, water levels, shore power status, engine performance, temperature, location & more right on the App. Receive instant alerts in case of a critical event, catching small issues before they become large, costly ones. With Siren Marine, have peace of mind knowing your boat is literally in the palm of your hand. Some features require a Siren 3 Series Wireless Sensor or Wired Sensor.




Tech Specs

Comparison Chart

More Features

Standard Features

Battery Monitoring

Monitor your boat’s battery & receive alerts if voltage is low

GPS Position/Geofence

Track boat’s location & receive alerts on boat movement

NMEA 2000

Best-in-class NMEA 2000 marine electronics backbone connectivity

Digital Switching

Remotely control multifunction displays, lights, refrigerator & more

Global LTE (4G/5G)

The latest cellular technology connects you to your boat anywhere, anytime

Features with Add-On Sensors & Accessories

Engine Metrics

Monitor performance & support metrics for any NMEA propulsion system

Connected Fluid Tanks

Monitor tank levels (i.e. fuel, water, etc.) and check level history


Add snap, motion & entry sensors for the ultimate boat security system


Monitor bilge activity, including bilge run time & daily bilge cycles

High Water

Detect water and monitor water level in bilge

Shore Power

Monitor shore power connection & receive power outage alerts


Monitor temperature of cabin, engine room, fridge and/or bait locker

Satellite Compatible

SirenSat provides smart boat location & tracking when outside of cell range

Wireless Sensors 3.0

Siren 3 Pro delivers improved wireless connectivity

Physical Dimensions 6 in x 4.4 in x 2.1 in
152.4 mm x 111.76 mm x 53.34 mm
Weight 1lb
Operating Voltage 9-30 VDC
Internal Battery Type 3000mAh Lithium Polymer Battery
Internal Battery Backup Power Up to 48 Hours Backup Power
Firmware Upgradeability Over the Air (OTA) for Siren 3 Plus
Cellular Internal Antenna, 4G/5G CAT-M1, with fall back to NB-IoT and EGPRS
Wireless Internal Antenna
NMEA 2000 CAN Bus 1, M12 (5 Pin)
Mounting Snap-in bracket with (4) screws provided for mounting
Positioning Internal Antenna, GNSS, GPS/GLONASS with SBAS
Connectivity Interface cable with mating connector of 1m length provided for wired inputs and outputs with 12 AWG conductors.
Environmental/Temperature (Operating) 32°F to 113°F
0°C to 45°C
Environmental/Temperature (Storage) -4°F to 140°F
-20°C to 60°C
Humidity 0 to 90% RH
Water & Dust Tolerance IP67
Certifications FCC Part 15, Subpart B, Class B
NMEA 2000
Wired Sensor Inputs Battery 1
Battery 2
High Water 1
Security 1
Battery Switch
Shore Power
Remote Arm/Disarm
Wired Sensor Outputs Blue Sea Battery Switch (#7713)
Relay Output 1
Relay Output 2
Wireless Sensors Magnetic Reed Switch (Intrusion)
Bilge Pump Activity
High Water
Battery Voltage

Status LED Indicators

Siren 3 Plus vs Siren 3 Pro

Feature / Benefit Siren 3 Pro Siren 3 Plus

Standard Features (Tracking, Monitoring & Alerts)
GPS Position
Geofence Capability
Battery Voltage
External Cellular Antenna (Global LTE: 4G/5G)
Internal Cellular Antenna (Global LTE: 4G/5G)
External Wireless Sensor Antenna
Internal Wireless Sensor Antenna
Internal GPS Antenna
External Satellite Module (Optional)
Add-On Features
Wireless Sensors, Siren 3 Series (Bilge Activity, High-Water, Temperature, Entry, Battery)
Wired Sensors (Shore Power, Security & More)
Wired Accessories for Direct Control of Onboard Devices (Remote Battery Switch, Lighting, Audible Alarms & More)
SirenSat (Offshore Satellite Connectivity)
External Cellular & GPS Antennas
Wiring Cable/Harness 1*
(Battery 1 & 2, Remote Arm/Disarm, Ground, High Water 1, Shore Power, Security 1, Ignition/Engine Hours, Blue Sea Battery Switch, Relay Control 1 & 2, Battery Switch ON/OFF)
*12 Input / Outputs
Wiring Cable/Harness 2^
(High Water 2, Security 2 & 3, Relay Control 3 & 4)
^Max capacity for directly wired sensors & accessories
Clip-on Mounting Bracket (Easy Installation)
Water-Resistant Design
Accessible Back-up Battery
NMEA 2000 / CAN Bus
NMEA 2000 Built-In
J1939 Built-In (CAN 2)
Digital Switching with CZone Compatibility (Control Lights, A/C, etc. from App)
Engine Performance Monitoring (RPM, Fuel Consumption, Engine Hours, Temperature & Oil Pressure)
Tank Level Monitoring (Fuel, Water & Waste)
ZF Transmission Monitoring & Support
Other Features
Over-The-Air Software Updates
Customized Boat Branding in App
Customized Engine Manufacturer in App
Self Install Option (DIY Friendly)
Certified Installer Network
Made in USA

Save Money with Insurance Discounts

Most marine insurance providers offer discounts for security & boat monitoring solutions. You could save 5-10% on boat insurance depending on your insurance carrier. Ask your agent to learn more! A Connected Boat® is the smart choice.

Digital Switching with CZone Compatibility

CZone, remotely power up systems before heading to your boat. Control lights, A/C & other systems and access digital switching right from the Siren Marine App. Welcome to the Connected Boat® with CZone® Digital Switching. Requirements: power, connection to the NMEA2000 network & configuration update from a certified CZone® installer.

Amazon Alexa Compatibility

Did you know that our Connected Boat® system is compatible with Amazon Alexa & Echo Dot Smart Home Speakers? Activated using simple voice commands, Alexa will report back on the status of the onboard systems connected to your Siren Marine App! Know the status of your boat anywhere, anytime. Learn more.

See the Siren 3 Plus in Action!

Additional Videos

Ask Alexa!

We're compatible with Amazon Alexa and Echo Dot smart speakers! "Hey Alexa, Ask Siren Marine..."

Siren Marine App Overview

We'll walk you through the Siren Marine App. Get real-time information about your boat's critical systems.

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