"Keys are like that."
저래(요) is from 저러다, which is a contraction of 저리하다 (originally 저렇게 하다 or 저와같이 되게 하다/만들다).
저러다 is a verb while 저렇다 is an adjective. 저렇다 is a contraction of 저러하다 (originally 저와 같다).
It seems like I'm splitting hairs since both conjugate as 저래(요) in the present form. But later verb conjugations will depend on your knowing the difference. So it's important to learn it now rather than get confused later.