These are brand new surplus spare parts from Dulles International Airport. They were never used. The Box that they come in has some storage wear and tear and some water damage from moving them in a rainstorm. But the parts inside are in Excellent Brand New Condition.

Description

The Siemens Model MKB-4 Annunciator/Keyboard provides the MXL-IQ Fire Alarm System with its primary control and annunciation. The MXB-4 has an 80 character, backlit LCD alphanumeric display that continously updates information about the System status and user defined device messages. If there are multiple alarms, security conditions, or troubles, the MXB-4 displays the highest priority event that has occurred. This product was discontinued October 2018