The DIN-BAR was specifically designed to replace (form & fit) the old electromechanical bargraphs, with 21st Century Technology exclusive to OTEK, the originator of the Automatic Tricolor Bargraph P.I.C. (Programmable Intelligent Controllers). The only similarity is the panel cut out, mounting and bezel. The rest is all OTEK's proven design with thousands of units installed from Space Stations to Military, Petrochemical, Pharmaceutical, Transportation and other critical industries.