Locks for HMO - student's doors

Hi.

Sorry for simple questions...

I need to fit door locks to rooms in an HMO for Students, they need to lock with individual keys, but be openable from inside WITHOIT a key for easy escape, I guess is just a thumb turn.

I guess they don't need the full "panic locks" like in a final exit door.

Do they need simple sash locks.. ? But that will require a key from both sides no... ?

I can't see it's anything too complex, but can't seem to find the right stuff anywhere... where can I buy the right stuff, sensible quality at sensible prices ?

I guess I could use simple old fashioned Yale night latches, but the students will only lock themselves out of the rooms and call me at 2am.. never ideal.

THANKS

 

Ok, I see,

so it's a handle suitable for Euro cylinder, the Euro cylinder with thumb turn and a sash lock suitable for the euro lock.

about £30 worth per door :-(

I guess the way it to buy it all as a set if cheaper.

Your matched key idea is great, have heard of them, but so far am still walking round like a jailer....

OK Thanks