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Products Access Control
PLC interlock controller


December 8, 2021
By SP&T Staff

Dortronics’ 48900 PLC Interlock Controller is a cost-effective solution for implementing door interlock and mantrap systems with up to nine doors. In operation, unlocking or opening one door automatically secures other designated doors within the interlock group. The fully integrated single-board solution provides installers with complete control of all operating and configuration options. The 48900 Series PLC Interlock Controller integrates with virtually any access control system utilizing dry contacts.


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