We have a Dynon EFIS-D10A that we were going to install in a motorglider. It includes all hardware including a magnetometer and OAT probe. Never installed. It needs the STC purchased through EAA for $100. It lists for $2330 (with battery) on Aircraft Spruce, plus $65 for the temperature probe and the remote magnetometer, which cost about $200 (but is discontinued). Includes all harnessed. Make an offer.....