MDD-256/T Control and signaling module (up to 224 devices)

MDD-256/T control units are designed for supervision of Digital Gas Detection System consisting of digital detectors type DD, DG/M or DG.EN/M and digital control units type MDD, MDP, MD equipped with RS-485 digital communication port. The communication is in MODBUS RTU protocol.

MDD-256/T supervisory mode performs cyclic checks the status of individual detectors/devices on the bus, and as soon as certain event appears or certain alarm parameters are exceeded, optical alarm signaling is activated, control outputs are activated, and information is transmitted via the digital network to any system/control/visualisation component.