Model SA-1XP gas detection sensors are designed to detect and monitor toxic gases, oxygen, and combustible gas in ambient air. The design utilizes Safeguard Analytics smart sensor modules which include electrochemical, photo ionization detectors, non-dispersed infrared and a multi spectrum combustible gas detection sensor. Each sensor module stores gas type, measurement range and zero-span calibration data points. The control transmitter consists of a microprocessor-based control circuit, signal conditioning circuitry and a high visibility color graphic digital display.