A handleset that has a separate deadbolt from the handle, like shown above on the right, can not include this feature.To make it easier to search for interconnect handlesets, click on the Emergency Egress/Interconnect button under the handle sets category at the top. It will give list all of the handlesets with the interconnect mechanism.
You can also find the interconnect feature with some of the sideplates. All of the Emtek 5 1/2" CC Sideplates have the interconnect device option if you are ordering the single cylinder (not double cylinder) if you choose to select it when ordering. Interconnect devices are not available for the Emtek 3 5/8" CC sideplates.
Looking for commercial grade for with this feature? Under commercial hardware there is a list of categories to the left and you can "narrow by style" by clicking interconnected locks. You can scroll down through all the interconnected locks and find what will work for your application! Now when looking through the commercial interconnect devices after looking for a full plate under the handleset category, you might think that some of these aren't right because the deadbolt is separated from the lever. It looks that way on the exterior part of the lockset, but all of the commercial interconnect locks have a full plate on the inside of the door and the mechanism works the same.
The interconnect locks or emergency egress locks make exiting so much more simple all you need is one hand. It's a good feature to have for commercial applications especially in case of an emergency.