Edges all-new EAS Shift-On-The-Fly (SOTF) allows you to change custom tunes* on the fly utilizing the Insight. The EAS SOTF part numbers cover the 2011-2016 Duramax, 2010-2018 Cummins, and 2011-2019 Power Stroke. Customers can now change tunes right on the screen! Many companies use a voltage signal to change between their 5 tune levels, when tuned with custom tuning software. Instead of drilling a hole in the dash, add the EAS SOTF accessory to an Insight monitor to control custom tunes* while driving down the road.

I only opened it because I thought it was egt probe brand new never used.