For a more relaxing voyage, outfit your watercraft with VDO panel mounted warning buzzers. As part of the VDO Marine application instrument line-up, these low-pressure, high-temperature type panel-mounted buzzers can be installed in minutes (mounts to the dash of a Marine application). These audible units "buzz" when they meet a certain condition, such as in the case water exceeds a certain temperature or if oil pressure drops below pressure/lbs. to alert captain and crew