The Sandel Avionics SN3308 ColorMap HSI packs the essential features of an EFIS Nav display into a standard three-inch instrument..  By combining the functions of an HSI, an RMI, a moving map and a Stormscope display into one instrument, the SN3308 ties together the critical elements of situational awareness.  And by adding to that a 3-light marker beacon display and GPS annunciator display, the SN3308 becomes the virtual equivalent of an EFIS nav display, sized for GA cockpits. For years, pilots of large commercial aircraft have appreciated the benefits of Electronic Flight Instrumentation Systems, commonly known as EFIS.  Full EFIS systems combine data from different sources within the aircraft and provide the pilot with a unified display.  This greatly simplifies the instrument scan and improves positional awareness.  The automatic Magnetic Compass Slaving System automatically slaves the Sandel to true magnetic headings at all times without the inaccuracy of traditional directional gyro systems, and are immune to precession.

Sandel SN3308
Color EFIS HSI

L3 Communications Stormscope
WX-500 Weather Mapping Sensor, displayed on the Sandel, as well as both Garmin 430 Nav/Coms.

Stormscopes  help pilots safely avoid the hazards of convective weather. They spot dangerous conditions that radar might not show, as well as enable pilots to make informed, flight critical decisions about thunderstorm avoidance and fly with greater confidence. They  incorporate the latest ranging technology for more precise tracking of lightning discharges from as far away as 200 nm.