Siren Marine Wireless Sensor Guide

Meet The Wireless Sensors

Siren Marine Wireless Sensors are easy to install and ideal for hard-to-access areas.

⚙️ Easy to Install
? Peel & Stick Mounting
?️ Monitor Temperature
? IP67 Waterproof
? 2-Year Battery Life
? Up to 200 Foot Range

Image: A Siren Marine wireless sensor module, highlighting its compact design.

Bilge Pump Sensor

Monitor bilge-pump activity and receive alerts if your boat is taking on water.

There are two ways for the wireless sensor to monitor bilge pump activity:

Connect the Positive(+) and Negative(-) leads from the sensor directly to the Positive(+) and Negative(-) leads off your bilge pump.
Connect the Positive(+) and Negative(-) leads from the sensor directly to the bilge indicator light at your helm.

Secure the sensor by using the supplied Mounting Bracket or Adhesive Strip.

Insert the Bilge Pump Tail into the wireless module and tighten the two hex screws.

Pair the Wireless Module to the MTC unit.

Note: This sensor is polarity sensitive.

Image: A Siren Marine wireless sensor module with attached wires, suitable for bilge pump connection.

Entry Sensor

Protect against unauthorized entry. Perfect for securing lockers, doors and hatches.

Mount the Wireless Entry Sensor Mounting Bracket to a hatch, locker or other entry point using the supplied Screws or Adhesive Strip.
Click the Wireless Entry Sensor into the Mounting Bracket.
Mount the Open/Close Magnet directly opposite the wireless module using the supplied Adhesive Strip.
Pair the Wireless Module to the MTC unit.

Note: When the hatch, locker or entry point is opened, a notification will be sent to the Siren Marine app and an audible alarm can be triggered.

Image: A Siren Marine wireless sensor module and a separate magnetic sensor component for detecting open/closed states.

Battery Sensor

Monitor additional batteries without a hard-wired connection to the MTC unit.

Connect both the Positive(+) and Negative(-) leads of the Battery Sensor directly to the Positive(+) and Negative(-) posts on your battery.

Secure the Wireless Battery Sensor using the supplied Mounting Bracket.

Plug the Battery Tail into the wireless module and tighten the two hex screws.

Pair the Wireless Module to the MTC unit.

Note: This sensor is polarity sensitive. Notifications will be sent to the Siren Marine app if the voltage drops below or exceeds present levels.

Image: A Siren Marine wireless sensor module with two ring terminals attached for connecting to battery posts.

High-Water Sensor

Detects if there is water in the bilge.

Mount the High-Water Wireless Module in an area above the High-Water Line in the bilge.
Secure the High-Water Sensor at the desired height in the bilge using the supplied Adhesive Strip.
Plug the High-Water Tail into the wireless module and tighten the two hex screws.
Pair the Wireless Module to the MTC unit.

Note: Notifications will be sent to the Siren Marine app if the water level in the bilge rises above the preset level.

Image: A Siren Marine wireless sensor module with a small probe extending from a cable, designed for detecting water levels.

Temperature Sensor

Monitor the temperature of your cabin, engine room, bait locker or fridge.

The Wireless Temperature Sensor works with and without the detachable Temperature Probe.
To monitor temperature without the Temperature Probe, simply mount the Wireless Module in the area to be monitored and link to the MTC unit.
To monitor the temperature of a specific area or piece of equipment (e.g. engine block or inside a fridge), attach one end of the Temperature Probe to what you want to monitor, plug the other end of the tail into the wireless module and tighten the two hex screws.
Pair the Wireless Module to the MTC unit.

Note: Notifications will be sent to the Siren Marine app if the temperature falls below or exceeds the preset levels.

Image: A Siren Marine wireless sensor module with a ring terminal attached to a cable, suitable for temperature monitoring.

Installation and Setup

Battery Installation

❗Important: Your wireless sensor comes with a CR2430 internal battery which will need to be installed prior to pairing the wireless sensor with the MTC unit.

Please be sure to follow the steps below:

Remove the four screws on the back of the wireless module.
Insert the CR2430 battery into the battery holder. Be sure that the Positive(+) side of the battery is facing up.
Replace the back of the sensor and tighten the four Phillips screws. Use care when closing up the wireless module. Make sure to tighten the screws snugly and that all seals and O-rings are secure and in place.

Note: Do not over-tighten.

Diagram: A CR2430 battery being inserted into a sensor module's battery holder, with the positive (+) side facing up.

Pairing Wireless Sensors to Siren Marine MTC

Make sure the battery has been installed in the wireless sensor. (See instructions on page 14)
Pair the wireless sensor prior to mounting in its permanent location.
Go to the Settings page on the Siren Marine app and select Add Wireless Sensor.
Scan the QR Code on the back of your wireless sensor to proceed.
Select the wireless sensor type.
In the dialog box, rename the sensor description and select Add.
To add additional sensors, repeat above steps.

Note: All fields must be filled in or selected.

Wireless Sensor Installation

❗READ BEFORE STARTING Important information on maintenance and installation:

All wireless sensors should be checked and inspected on a regular basis.
Keep all wired connections to battery terminals and bilge pumps clean and tight.
Battery life expectancy is two years, however we recommend replacing the internal battery of your wireless sensor every year.
The wireless sensors should be installed on a smooth flat surface.
Siren Marine adhesive strips are very strong and cannot be easily repositioned. Before you press and hold it for 30 seconds, be sure the wireless sensor is aligned correctly and is communicating with your Siren Marine MTC.

Mounting with a Bracket

If your surfaces are rough, dirty or prone to high heat or humidity, install your wireless sensor with the supplied bracket and screws.

Remove the wireless sensor from its supplied mounting bracket to expose the screw holes.
Align the mounting bracket in the desired location. Be sure to drill a pilot hole to avoid any cracking or chipping on the surface.
Secure the mounting bracket using the supplied mounting screws.
Snap the wireless sensor into the mounting bracket.
Plug the wireless sensor into the wireless module and tighten the two hex screws.

Mounting with Adhesive Strip

Make sure the surface is clean and dry.
Peel the protective cover off the adhesive strip on the back of the mounting bracket.
Align the mounting bracket in the desired position and press evenly with your palm. Hold in place for at least 30 seconds.
Snap the wireless sensor into the mounting bracket.
Plug the wireless sensor into the wireless module and tighten the two hex screws.

Battery Replacement

The wireless sensor will notify you via the Siren Marine App when the internal battery voltage is low.

If a sensor (e.g. high-water probe) is attached to the wireless module, it must be removed before the module can be removed from the mounting bracket.
Use the supplied Allen Key ⚙️ to undo the two hex bolts that attach the sensor tail to the wireless module. Carefully separate the tail from the module, being careful not to lose the screws.
If the wireless module is mounted using the mounting bracket, unclip the sensor from the bracket.

Procedure

Remove the four screws from the back of the sensor and open the sensor.
Slide the old battery out of the battery holder and replace with a new CR2430 3V lithium battery, Positive(+) side up.
Close up the wireless module and tighten down the four screws without over tightening.
Place the wireless module back into the mounting bracket and reattach the sensor tail.

Technical Specifications

Model Numbers

Battery Sensor: SM-WLS-BATT
Bilge Pump Sensor: SM-WLS-BILG
Entry Sensor: SM-WLS-ENTR
High Water Sensor: SM-WLS-HIWS
Temperature Sensor: SM-WLS-TEMP

Wireless Sensor Module

Dimensions: 2.0in x 2.7in x 0.6in

Wireless Connection

900MHz radio frequency

Range

Up to 200 feet

Battery

CR2430 Lithium Cell, rated 2 years

Warranty

2-Year Limited Warranty

Mounting

Mounting bracket with adhesive mounting strip and mounting screws included

Requirements

Requires MT, MTC, or MTC-Pro and Siren Marine Service Plan

Certifications

IP67 Waterproof, FCC, EU

Contact Information

Website: sirenmarine.com

Technical Support: 401.619.4774

Toll-Free: 855.75.SIREN (855.757.4736)

Address: 221 Third St., Suite 200, Newport, RI 02840

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