Yellow ring

I hardwired my keypad and notice the circle on the keypad briefly turned yellow twice. Any ideas what the yellow circle means?

Is it possible you accidentally tapped the X key in the bottom left? The single yellow flash indicates the pin entry was canceled with the X key. If it flashes yellow three times, it means a sensor is open while you’re trying to arm it, and it is in need of bypass.

Here’s a community topic with all the alarm keypad light definitions for your convenience, as well: