The ELITE-TI can use the HDI for 2d/DI or the Totalscan for 2d/DI/SI ...

As Lowe rider mentions above both units have to be powered on to share Waypoints ... If 1 unit is not powered on when a Waypoint is created = that Waypoint will not sync and load into the other unit when it is powered on (like in HDS) ...

And ELITE-Ti cannot share any sonar or mapping like HDS because those features are Ethernet functions - ELITE-Ti only has NMEA connectivity (and WiFi) ...

Elite Ti | LOWRANCE | Marine Electronics

Rickie