This Lenel 4 reader support board is a great addition to your access control equipment. It has been tested and is fully functional, ready to be installed and used. The board is specifically designed to support up to 4 readers, making it ideal for businesses and facilities that require multiple access points. Additionally, it is branded by Lenel, a reputable company known for their quality access control products. With this board, you can improve security and ensure that only authorized individuals have access to your facility.