This replacement remote unit is designed for use with Plantronics CA12CD systems. It is sold without battery and is a great choice for anyone looking to upgrade their current remote. The unit type is a standalone unit and it is compatible with a variety of Plantronics models. The brand is Plantronics and the model is CA12CD. This item is perfect for those in need of a replacement remote or for those looking to upgrade their current system. It is a great addition to any home networking setup and is sure to provide reliable performance.