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Is this a relay?

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NK1 View Drop Down
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    Posted: 09 June 2022 at 23:46

Hi all. I have just purchased a 2008 Hanse 350 and was looking around the engine today. There is a black unit that looks like some sort of relay??. Anyone know what it is and where it should be mounted? Thanks

For 

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NK1 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NK1 Quote  Post ReplyReply Direct Link To This Post Posted: 10 June 2022 at 08:03
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Martin&Rene View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Martin&Rene Quote  Post ReplyReply Direct Link To This Post Posted: 10 June 2022 at 10:20
On my yacht , which is fitted with a YANMAR engine and saildrive,  there is something that looks like that and it is the amplifier for the sail drive water sensor alarm that checks for any water between the 2 parts of the saildrive seal.  Just fasten it somewhere with a cable tie.

A Volvo engine would not have one.
Martin&Rene Hanse 341 Dipper Wheel steering, 3 cabin layout, normally based in Scotland
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H8jer View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote H8jer Quote  Post ReplyReply Direct Link To This Post Posted: 10 June 2022 at 21:03
Hi

It is as said an amplifier for the signal to the control panel. Has nothing to do with a loudspeaker, but might enhance the signal strength.
But I think is more likely that is it meant to suppress electronic noise from tricking the alarm unnessarary.
It has part number 196420-02812 saildrive water seal alarm amplifier
/h8jer
Hanse 370#487 30HP 3-cabin
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NK1 Quote  Post ReplyReply Direct Link To This Post Posted: 11 June 2022 at 22:26
Many thanks for the reply’s. I will cable tie it up as suggested. 
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