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SeaTalk Alarm 149.00EUR 104.30EUR
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SeaTalk Alarm is a small device that monitors a SeaTalk(R) network, different devices on a SeaTalk network , it monitors different alarm conditions and sets off an alarm when certain conditions appear.

The main functions are

  • Produce an unmistakable alarm when a SeaTalk instrument produces a warning or alarm.
  • Monitor the SeaTalk instruments and set off an alarm if an instrument - or the whole SeaTalk network - should break.

SeaNet Alarm provides

  • Remote alarm for ST40, ST50, ST60 depth & wind instruments
  • Remote alarm for autopilots
  • Remote alarm for SL,RL,C and E series radar
  • Built in alarm clock - wake up singelhanded sailor
  • Built in SeaTalk network surveillance and alarm if network stops sending data
  • SeaTalk instrument surveillance and alarm if instrument stops sending data
  • Monitors up to 10 alarms simultaniously
  • Solid state switch with short-circuit and overload protection
  • Pushbutton for alarm acknowledge and special functions
  • LED's to visualize alarm source
  • Galvanic isolation between SeaTalk network and alarm voltage
  • Powers supply and alarm power independent from SeaTalk network
  • Configuration via USB connection to PC and configuration software.

(R) SeaTalk is Reg. Trademark of Raymarine Inc. www.raymarine.com


SeaTalk Instruments are normally installed in the cockpit of your vessel.

The built in alarms are not loud enough to be heard by the crew inside a vessel or to wake up sleeping crew members.

So even with anchor alarm activated, it is not sure that the crew will wake up if the anchor is dragging.

Single handed skippers often get too little sleep and need a loud warning if depth, windspeed or radar indicates a dangerous situation. They usually also want to be waked up every half hour or hour in order to check if everything is all right.

It's easy to miss an instrument beep while sitting on the chart table while the engine is running.

It's easy to miss a radar beep, when the radar is mounted at the chart table and you are at the helm.

If an instrument should break, without the SeaNet Alarm it might take a long time before the failure is noticed. Maybe the boat operator would rely on a device that that isn't functioning any more.

There is clearly a need for loud sound or an optical alarm, that makes you aware of possible dangers and instruments failure.

With the SeaNet Alarm this needs can be filled in an easy and economic way.

When an alarm condition is recogniced, SeaNet Alarm activates a switch that can activate a powerfull external alarm and/or switch an optical alarm.

Alarms can be triggered by :

  • Internal “wake-up” timer → internally generated
  • SeaTalk network failure → internally generated
  • Shallow water alarm → from depth instrument
  • Anchor alarm → from depth instrument
  • Transducer defective → from depth instrument
  • High & low windspeed alarm → from wind instrument
  • Wind angle high & low alarm → from wind instrument
  • Windshift → from autopilot
  • Off course & drive stopped & auto release alarm → from autopilot
  • Object in guard band 1&2 → from radar
  • MOB Alarm → from instrument
  • Instrument failure → internally generated

Alarms can be switched on/off individually.
A unique alarm sound pattern can be assigned to the different alarms – so that the user can “hear” what caused the alarm.

For further details please visit your SeaNet Alarm Project page. or download the MANUAL

There is also a forum for news and discussions about SeaNetAlarm click here for the forum

Before ordering - Please download the manual. We want to make sure that you get what you need

Items in stock : 10
This product was added to our catalog on Thursday 26 March, 2009.
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I forgot to tell you, what devices are connected. I have a ST 30 Wind Autohelm, and ST4000+, and also a Bidata ST40 Depth/Speed. Regards. Patrick

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Hi Frank, Thank's for answer! For the moment I could not do some test, because, I'm at home, and I will try to test, when I will be back on boat. The link is with me at home, and command $SNBSE,0,1 put the parameter to "1" . The response is OK. Before this parameter was to "0". I will contact you on my boat, but perhaps the next week. Regards. Patrick

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Hello Mauline, ok. Let's try to find out what's going on. You say, you never got any Seatalk data from the SeaTalk devices, but you can "talk" to the Link with CuteCom. That's the first problem we should solve. Could you tell me what kind of seatalk devices you have connected ? There should be SOME seatalk data, but it might be helpfull to know what you have connected. When you see NOTHING - well what comes to my mind first is - how is the SeaTalk Bus connected. I'm sure you did it correct, but maybe you could tell me which wire it connected to which terminal. Since you can talk to the link, you could switch ON the raw SeaTalk data output. That would show us if we receive anything from the SeaTalk Bus. Connect to the link with cutecom (or whatever you have on the PI) and type $xxx. Please make sure, that cutecom is set up to send CR and LF when you press ENTER. If the link replys with $xxx, we know the connection from the PI to the link is working. You could also try $SWVERSION if you like. Now type $SNBSE,0,1 and press enter. Now type $SNBSE,0 and press enter. The link should reply with $SNBSE, 0, 0.001 and from now on you should see $STALK sentences whenever seatalk data arrive. Regarding the raspberry is not connecting on bootup. This can not be caused by the software update. The USB->RS232 controller is a FTDI chip, that handels the USB connection all by itself. There is no software involved. Maybe you could reboot the PI, open a terminal and tell me what [code:1:f69a7f0ae1]dmesg | grep USB[/code:1:f69a7f0ae1] shows. This should tell you if PI has found the USB chip. You should see something like [code:1:f69a7f0ae1] usb 1-1.4: New USB device found, idVendor=0403, idProduct=6001 FTDI USB Serial Device converter detected[/code:1:f69a7f0ae1] Of course it could be a hardware problem with the SeaTalk Link itself. But please let's first try if we can solve the problem. If not, I just send you another link. No Problem. Best regards Frank

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After upgrade same problem!

In 1.69, I can't collect any data from Seatalk bus. The Seatalk NMEA link get a problem, because to dialog with it, I have to unplug and plug with power on. On normal startup or reboot it's not possible.... Why? I don't know. I'have try with my Raspberry and a PC whith Linux, it's the same thing. Could you give me,......if you read sometimes this forum, some help? Thank's a lot.

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Version 1.69

I just upgrade my link to 1.69 version. Now at reboot, Raspberry don't see the USB link. No answer from Cutecom. In have to unplug and plug again the usb stick(with power on) to access by Cutecom.... Strange. I'm not on the boat, so I can't see, if data arrive from Seatalk bus. But with 1.65 version, everything where OK at reboot!

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Rapsberry PI 3+Opencpn

I've tried to use the NMEA Link with my Seatalk instruments. I connect the NMEA link USB to my Raspberry PI 3 with Opencpn. I use Cutecom on /dev/ttyUSB0 to dialog with the usb link. Every thng is OK. $SWVERSION give me 1.65. All dialogs are OK but in the screen of Cutecom (as minicom or hyperterm), i never see sentences from Seatalk. If with Cutecom I open /dev/ttyUSB1 ( USB GPS), I can see all the data from gps.... I don't understand why I never see data from my Seatalk instruments. Of course I see nothing on Opencpn. Please, have you and idea. Perhaps power problem with the raspberry port usb, or a bad configuration of the link...? Thank's a lot for anwer. Patrick

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Honestly - I have no idea. I guess I simply would try to leave the depth transducer connected, disconnect the speed transducer and see what it shows when you send STW from the bridge. Not sure if it works though. Cheers Frank

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SOG ST60 tridata

Hi Frank, I want use the bridge to take the SOG from GPS and send it as STW to ST60 Tridata. From your post I've understood that in this case the ST60 must be set as slave, but, it's a tridata so I need it for the depth, Do you know if it can be slave only for the speed but not for depth? Thanks mg

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Vielen Dank, dass Sie sich darangesetzt haben! Leider läuft es auf meinem Raspy bisher nicht. Ich habe die Pakete qt4-dev-tools und qtcreator installiert und versuche die Datei auszuführen... Muss ich noch andere Pakete installieren? Gruß, Harm Meiners

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So - eine erste unstable Testversion ist compiliert und kann probiert werden [url=http://www.gadgetpool.de/nuke/modules.php?name=Downloads&d_op=viewdownloaddetails&lid=71]Multiplexer_stConfig_Tool_for_RaspberryPi_2[/url] im Downloadbereich. Gruss Frank Wallenwein

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