Yes, partial setting is a feature which many alarms have now integrated into their systems. Partial setting means that one is allows to set only some parts of the alarm on. This is useful if only one part of the premises is being used at one time, and requires the other parts to be protected. For example, a person in a house using only the bedroom can switch off the bedroom sensor but still keep the other PIRs set for home protection. Different systems have different numbers of partial sets allowed.