A 4 strength sentry with 2 subs (ideally 3) for 4 credits is great value for the corp. However, because of the traces, even if the runner face checks this, there is no guarantee it will actually fire. Trace 3 is just high enough to be relevant, especially now that Power Tap and a whole assortment of link cards are rotated. Outside of Sunny, who laughs at this card, and maybe link-friendly shapers like Kabonesa and Lat, there isn't a runner who can brush this off. And being able to trash a console is game-winning, while it can end the run as well.
Pretty decent card, especially if you can park it on HQ. Probably best in Earth Station. Not fantastic though.