Siren 3 Pro, boat monitoring evolved
Since the introduction of their first boat monitor nearly a decade ago, Siren Marine has been a leader and innovator in boat monitoring. The Siren 3 family of monitoring products encompasses their decade of experience and promises a comprehensive boat monitoring system. With wired, wireless, and NMEA 2000 sensors the system has the ability to monitor nearly every aspect of your boat, and it can even control your boat remotely. But, how does it all work together? I’ve been testing the Siren 3 Pro aboard Have Another Day and can share some results.
Dating all the way back to the Sprite and Pixie, Siren focused on giving boat owners the peace of mind that their boat is healthy, ready to go, and still where they left it. But, Siren has come a long way from the early days of Sprites and a text messaging-based system. They’ve moved from simple SMS-based commands to a feature-filled app that makes it easy to keep tabs on your boat. Now, with NMEA 2000 support, wireless sensors, wired sensors, satellite capabilities, and more, Siren is working to deliver on their Connected Boat tagline.
Siren 3 family
Siren unveiled the $749 Siren 3 Pro first, but will build a family of Siren 3 products with two more models to follow. The pro will be the top of the eventual line with a Siren 3 Plus and Siren 3 slotting in below. The Siren 3 Pro offers dual CAN interfaces (one for NMEA 2000 and one for J1939), dual wired harnesses, external antenna connections for cellular, wireless sensors, and GPS. They expect to release The $499 Siren 3 Plus by the end of 2021 and will offer a single CAN interface for NMEA 2000, one wired harness, and all internal antennas. They aim to launch the Siren 3 by the end of 2022 with a price target of $199. The 3 will not have any CAN interfaces and a simplified harness.
All three models will support up to 14 wireless sensors and have a 4g/5g cellular radio. Monitoring rate plans will also be the same for all three products at $180 a year, about $18 per month, or $125 for April 1 to October 31 seasonal monitoring.
The Siren app is your main interface to the Siren system. It allows you to see your boat’s status at a glance and then drill into the details. Each tile represents a sensor while the map at the top allows you to see your boat’s current location. If a sensor is in alert, it will have an orange background.
Clicking on a home screen tile loads detailed status about a sensor. The detail screen allows you to set alert parameters, view charts of historic data, and control the alerting rules used by each sensor. I really appreciate the granular thresholds of each sensor and the ability to control individual alerts.
Siren’s second-generation product, the MTC, introduced wireless sensors. I’ve had mixed experiences with boat monitors and wireless sensors. They’re great because it means you don’t have to run wiring from the central monitoring unit to each monitored element. But, if the wireless link isn’t totally reliable, the system is prone to false alarms, missing real events, and generally frustrating the boater.
Each $129 wireless sensor contains an internal temperature sensor and magnetic reed switch. The reed switch allows you to use the sensor as an entry sensor when paired with a magnet. Additionally, Siren offers tails for monitoring batteries, bilge pumps, high water, and temperature. You can also use the internal temperature sensor, but not with another tail or the entry sensor.
Boats can be challenging environments for wireless links. Larger boats tend to have myriad wireless systems running, lots of structural metal, and generally hostile RF environments. The wireless sensors Siren used with MTC worked very well on many boats. But, bigger boats with more RF interference and tougher spaces to reach had some troubles. I experienced some of those difficulties aboard Have Another Day.
Fortunately, Siren put a lot of engineering brainpower into ensuring the wireless sensors on their third-generation systems would be reliable. Siren re-engineered the wireless system and improved nearly every aspect of their communications. The Siren 3s now enjoy bi-directional communications with their sensors. This means, among other things, that the Siren 3 can perform over-the-air firmware updates on the sensors.
The back of each wireless sensor has a QR code on it which makes adding sensors to your system very easy. By selecting the settings menu and choosing”Add Wireless Sensor” you initiate wireless sensor pairing. Now, you use the camera on your phone to scan the QR code which contains the sensor’s identifier. With the sensor scanned, you just pick the sensor type and select a name for the sensor to complete pairing.
NMEA 2000 and J1939 support
Towards the end of the MTC era, Siren began showing NMEA 2000 integrations using a customized Actisense NGT-1. NMEA 2000 support allowed the MTC to read tank levels and engine information from the NMEA 2000 network. Plus, Siren showed the ability to control C-Zone digital switching systems. The 3 Pro and 3 Plus have NMEA 2000 interfaces built into the unit so no NGT-1 needed.
Siren 3 Pro comes with two CANBus interfaces. One interface connects to an NMEA 2000 network and the other is a J1939 interface allowing the 3 Pro to read engine and transmission information in OEM installations. For aftermarket installations, Siren uses J1939 to NMEA 2000 gateways to convert J1939 data onto the NMEA 2000 network and then reads the engine information from NMEA 2000. I’m using J1708 to NMEA 2000 engine gateways aboard Have Another Day to provide this information to the NMEA 2000 network. The 3 Pro is then picking up the data and displaying it in the app.
Currently, the system reads tank level and engine information from a connected NMEA 2000 network. Siren is working on processing more information from the network with environmental data like depth, wind speed, and water temperature first on the list to add.
Siren supports CZone switching today and is currently testing EmpirBus control as well. Remote digital switching control means that not only can you monitor the status of your boat, but you can take action if something needs changing.
Amazon Alexa skill
Siren offers an Alexa skill so you can ask any Amazon Alexa enabled device about your boat’s status. Alexa can tell you about any connected sensor on the boat. As you can hear in my recording above, the skill seems responsive and is an easy way to get a quick update on your boat.
Immediately after setting up my system, it went right about monitoring Have Another Day. I found the app updated quickly and reliably. Even with wireless sensors in the most challenging locations for RF to make it back to the main unit. Have Another Day’s salon sliding glass door has a heavy metal frame that has proven tricky for other RF sensors. The Siren 3 sensor hasn’t had any troubles sending data back to the Siren 3 and I’m consistently impressed by the app’s update speed when the door opens.
I have a total of 8 wireless sensors aboard Have Another Day and they’re all working very well. I’ve lifted numerous float switches and dunked a few water sensors in cups of water just to be sure alerts occur quickly and reliably. So far, so good.
Once I finished the install I didn’t think about the system much and that’s a good thing. The job of a good monitoring system is to worry about your boat so you don’t. The Siren 3 Pro on Have Another Day has done exactly that. I know that if anything goes wrong with any of the monitored systems, I’m going to hear about it. That’s great peace of mind and just exactly what I want from a monitoring system.
Boat monitoring to telematics
Siren may have started as a boat monitoring company long before the term telematics had been applied to the marine market. But, their leadership position in the boat monitoring segment means they’re in a great position to help deliver valuable data to boat builders, component manufacturers and boat dealers. Siren systems are either standard or optional equipment on boats from an impressive list of builders including Hinckley, Mag Bay, MJM, and Riviera. Plus, earlier this year Siren and Yamaha announced a partnership focused on bringing Siren’s data gathering abilities to Yamaha engines.
At this year’s IBEX, I moderated a panel discussion with Siren Marine CEO Jeffrey Poole, Honda Marine’s Jim Loftus, and Boston Whaler’s Chris Wachowski discussing the opportunities and challenges of collecting and acting on all the data onboard monitoring systems can offer. The consensus of the group is that the technology exists to greatly improve the ownership experience for boaters.
Siren 3 is a highly evolved monitoring system and in my testing, it’s worked well. But that doesn’t mean the system is perfect. I think there are several opportunities for improvement to the system overall.
The battery monitor tail has a molded plastic collar where the outer jacket of the cable is removed for the positive and negative conductors. The trouble is, there’s not enough positive and negative wire exposed. Even on a relatively common battery, like a group 31, the leads aren’t really long enough to make it between the posts on the battery. Plus, on larger batteries and bus bars, I found the eyelets installed on the wires weren’t large enough. So, I had to cut off the eyelet and crimp a larger one on.
Although some monitoring products have added current sensing abilities to bilge pumps and battery monitors, Siren Hasn’t. Current measurements can tell you a lot about how these systems are working. For example, monitoring the current consumed by a bilge pump gives much greater insight than just if it’s running. Let’s take a 2,000 gallon-per-hour bilge pump. Running and pumping water the pump might consume around 10 amps. Free-wheeling and not pumping any water might consume half or less current. On the other hand, if the pump has ingested a zip tie or other debris, you might see current consumption double or worse.
But, I wonder if part of Siren’s thinking is a concern for complicating a critical safety system like bilge pumps. There’s great information from introducing current monitoring, but it comes at the cost of adding complexity to the pump. Monitoring for bilge pump activation just requires a tap to the circuit so that voltage can be sensed. On the other hand, current monitoring requires placing a current measurement device in the circuit. And that means modifying the bilge pump circuit, introducing new components, and more connections in that circuit.
Wired bilge pump monitoring
Along the lines of keeping it simple; I was a little disappointed to find there aren’t any wired bilge pump channels on the Siren 3’s wiring harnesses. You can connect up to two wired high water monitors but all bilge pump monitoring requires the use of wireless modules. Personally, I’d prefer the option to monitor bilge pumps via a wired connection.
Siren’s third-generation products build on their decade of experience and deliver a polished and powerful monitoring experience. Both the equipment and the monitoring services are reasonably priced. The Siren 3 hardware has plenty of capabilities and I expect that Siren will continue to add new functionality for years to come.