The smoke detector, thanks to optical sensors, provides notification of smoke in a room.
All smoke detectors consist of two basic parts: a sensor to sense the smoke and a very loud electronic horn to wake people up. Smoke detectors can run off of a 9-volt battery or 120 volt house current.
With all the luxuries that are on boats nowadays, boaters need to be cautious of the chance of a fire. Houseboats will have a smoke detector for your safety. It is important you make sure your family knows what to do and where to go in case the alarm goes off.