Sierra Monitor Corporation (SMC)

SMC offers a full range of high-quality gas detectors, manufacturing everything from single, fixed-point to system-wide, multi-point and customizing each gas detection system to each specific application as needed.
Sierra Monitor's gas detectors detect literally dozens of toxic/dangerous gases, alert you to oxygen deficiency, and are equipped with numerous advanced technologies, such as protocol converters and remote management systems, that make them exceptionally easy to use.

SMC Sentry IT 32 Channel Controller
Sentry IT offers best-in-class performance for fire and gas detection with integrated IT sensors, a modern, comprehensive controller, and compatibility with numerous interfaces (both new and legacy).