Multi-Door Controller Kits provide all the necessary hardware components in one box to complete or extend an access control system. From powerful KT-300PCB controllers to readers and key tags, our kits have you covered. These kits are ideal for large applications where space, time, and budget are important considerations. Rather than having to install separate enclosures for each controller, the kits enable you to mount multiple controllers inside a single enclosure. Multi-Door Expansion Kits are also available to expand the system in 4-door increments. The expansion kits leave nothing to chance and provides the basic peripherals to expand your system such as additional KT-300 controllers, transformers, rechargeable batteries, and more – all with the convenience of one model number.