A diffusion-based detector, with the gas type and sensitivity range determined by installing an application-specific Model SA2 Smart Sensor module. Equipped with a full color digital display, at startup, the detector automatically identifies the gas type, sensitivity range, and serial number.  The device self-guides the user in the calibration process for zero and span calibration, providing a record of last calibration date.  This device also has configurable sleep modes, GPS entry details and event logging.

Optional features include relay outputs, intrinsically safe barrier for hazardous environments and choice of housing between ABS plastic for non-hazardous environments and aluminum or stainless steel for hazardous environments.  The SA-220 can be used standalone, auto-configured to our SCX Controller or any other device that receives MODBUS or 4-20mA outputs.