Nikka Instrumentation supplies Graphic Terminal with 4 levels Graphic Display. Nikka Instrumentation also offers process parameters, programmable logic controller and supervisory control and data acquisition units. The Graphic Terminal with 4 levels Graphic Display, Model OP-170 B, has 9 password levels. The Graphic Terminal with 4 levels Graphic Display has membrane keyboard. The Graphic Terminal with 4 levels Graphic Display has 512 KB flash memory. The Graphic Terminal with 4 levels Graphic Display has customizable function keys. The Graphic Terminal with 4 levels Graphic Display has facility of alarm or event messages with buffer.