Sierra Instruments & Controls supplies Attachable Indicator with LCD Display. Sierra Instruments & Controls covers several segments including Consultancy: Process Instruments & Control System, Project: Turnkey PLC/SCADA Control system Integration, Machine Vision: Camera Inspection system for Quality Assurance, etc. Attachable Indicator with LCD Display is also used for pressure transmitters with output 4 to 20 mA. It is a 4-digit instrument with Model number 907.15.507.