Yep, this is the one I have! I pretty much carry it everywhere. It mostly alerts (silently) when I pass by someone who has had nuclear medicine treatments. Othe

Yep, this is the one I have! I pretty much carry it everywhere. It mostly alerts (silently) when I pass by someone who has had nuclear medicine treatments. Otherwise, I just enjoy the being able to detect the small differences in background radiation between indoor and outdoor or different floors of a building.