Provided is a mode-based access control method that includes: making a security mode list which indicates security setting states of devices existing in a home network; setting a specific security mode selected from the modes on the security mode list; and making the devices perform functions thereof in the specific security mode. The controller obtains data from which both a present output power of the generator and a power capacity of the generator can be determined. Communication means are operatively connected to the blood pressure cuff the monitor and arranged to automatically communicate a parameter associated with the cuff to the monitor. This send and disconnect IRP is also completed without a queuing stage on the processor that serviced the client request. The group provides or shares a service to enable peers to connect and interact via the P2P network within the context of the broadcast.