Abstract: Systems, method and apparatuses of a building control sensor unit are disclosed. One apparatus includes a building control sensor unit that includes one or more sensors operative to sense an environmental condition of a structure, and a transceiver, wherein the transceiver includes an extended antenna, wherein the extended antenna includes a strand of memory metal. The apparatus further includes a controller, wherein the controller is operative to receive information from other building control sensor units or a central controller, and transmit information to the other building control sensor units or the central controller, wherein the building control sensor unit is configured such that when placed on or within a ceiling of the structure, the extended antenna extends into the structure.