Vion Instruments Marine Barometer A4000.2
The electronic barometer features a high quality air pressure detector with an accuracy of ±1,5 millibar. It allows you to set an alarm for air pressure variations between 0,5 and 10 millibar - either increasing or decreasing - within a given period of time between 1 hour and 6 hours - or for a target air pressure value.
Other functions include: Temperature, humidity and air pressure display, 2 to 48 hour history display, Dual time zones, Regatta timer, Moon phases. You will find here an example about the moon phases.
Adjustable amber 3-level backlight of displays. Complete alarm system with adjustable buzzer and wake-up alarm. Output for exterior alarm. USB connection for power supply from PC or 230V USB-adaptor. 12V supply or the 4 pieces of AA batteries. Low battery indicator. Mounting for the wall is included. Width 165mm. Height 103mm. 3 years of guarantee. Made in China.