Rosslare's MD-D04 4 reader expansion board is the third part of a highly advanced line of expansion modules. This unit works seamlessly with Rosslare's state-of-the-art AC-425 networked access controller. Ideal for residential and commercial applications, the MD-D04 expansion board packs features such as advanced communication with the controller. The MD-D04 expansion increases flexibility to the access control system by adding four readers, four doors, four relay outputs and four supervised inputs to the controller.
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