Our flagship EDM930 has been redesigned to fit more ways in your panel! It can be mounted directly into a standard 3.1″ hole or flush mounted. Our Primary system allows you to remove your old steam gauge engine instruments and move up to the most advanced and accurate piston engine-monitoring instrument on the market. The EDM930 also features a long list of user options. EDM-930 as your personal flight engineer. Always there, working in the background, constantly watching over your engine while you concentrate on flying the aircraft. Your EDM-930 will be monitoring your engine conditions four times per second and will warn you instantly if any measurement exceeds the programmed limit.