Is there any product on the market that could be used for boats that doesn't need mains power and could send either a text message or call a mobile to inform the owner that their boat is being tampered with?
There are a few products which could be adapted for this application. Many control panels can operate from either 12V DC or 230V AC and you may be able to use the boat's own 12V DC supply or separate leisure battery to power your control panel and communications device. We are aware of a product supplied by Edgarson Security Designs (www.edgarson.co.uk) which can send both a voice message and a text message in the alarm condition which would be suitable for signalling. I would also ask around alarm control panel manufacturers to find a control panel with the lowest possible current consumption to work with this unit or similar.
Ashley Thomas of FM Electronics
Source
Security Installer