I believe to correctly block access for certain devices, you need both Scheduling and Access Control. The scheduling sets the time frames, Access Control uses the schedule to set the time frames to what devices that need to be controlled.
I recommend looking in to a DIR-626L or 636L for 2.4Ghz only radios, if you want both 2.4Ghz and 5Ghz radios, then a DIR-820L, 826L or 836L will be something you need to review. I have 826L and enjoy it greatly.