I use this one for quick read. https://www.amazon.com/dp/B00GRFHXVQ?psc=1
i use a dual probe for smoking, grate and meat temp.
___________________
https://en.m.wikipedia.org/wiki/Flap_steak
The flap steak is sometimes confused with hanger steak (IMPS/NAMP 140, UNECE 2180) as both are usually cut thin. The item consists of the obliquus internus abdominis muscle from the bottom sirloin butt. The cut is sometimes inaccurately sold as skirt steak.[2]