TwinXs 2C Elevator Access Control Panels,2 door access controller.Spectra’s TwinXs 2C is a highly accurate two door access controller suitable for every business vertical. Its super powerful design and simple mechanism makes it a favorite among clients. It is easy to install, use and maintain. Its ability to simultaneously control and monitor two doors, allows it to be a cost efficient alternative for our customers. It is a must-have for areas such as server rooms and research labs, to name just a few.