ABB Instrumentation Commander Chart Recorder/Controller. Model Commander 1900. S/N E/37626/3/8. Weight: 18 lbs. Case Material: Glass fiber-filled reinforced polyester. Window Material: Polycarbonate. 2 Pens. Standard I/o with each pen includes: Analog input, analog output, transmitter power supply, relay output and 2 digital inputs. High Visibility 6-digital LED display. The COMMANDER 1900 is a fully progRam Industriesmable circular chart recorder/ controller. The COMMANDER's straightforward operator controls and robust construction make it suitable for a variety of industrial environment. Excellent standard facilities are complemented by a powerful range of options to give the flexibility to match your application. Overall dimensions: 15 in. L x 6-1/2 in. W x 15 in. H.