MDF-300(A) is a standard-sized dual monitor module used to monitor and supervise two independent two-wire Style B (Class B) dry-contact initiating device circuits (IDCs) at two separate, consecutive addresses in intelligent, two-wire systems. LiteSpeed is a communication protocol developed by Fire-Lite Engineering that greatly enhances the speed of communication between analog intelligent devices. Intelligent devices communicate in a grouped fashion. If one of the devices within the group has new information, the panel CPU stops the group poll and concentrates on single points. The net effect is response speed greater than five times that of other designs. General Information Name: Fire-Lite MDF-300 Addressable Dual Monitor Module, Honeywell International, Inc, Fire-Lite Alarms by Honeywell Category: Fire-Lite Alarms by Honeywell, Fire, Fire Control Panels, Control Panel Modules UPC Code: 783863015809 Country of Origin: Mexico. Country of origin is subject to change.