Description: The Agilent HP 70004A is a refurbished Color System Display Mainframe.Product Specs:Interchangable custom hardkey panel Multiple instrument control of up to four instruments INSTR key allows operator to select instrument to control with a single keystroke Other Info:The Agilent HP 70004A Display has a removable custom hardkey panel, a key to aid in selecting the MMS instrument to be controlled, and several advanced firmware features.