BW Technologies Yellow Gas AlertMax XT II Gas Monitor with Alkaline Battery is the smart, simple, economical way to compliance and is compatible with MicroDock II automated test, calibration system. Portable detector for combustible gas, oxygen and hydrogen sulfide gases has straightforward one-button operation with robust, motorized pump for intelligent, remote sampling and is perfect for confined spaces. Detector complete with semi-conductor pressure sensor and comes with standard event logging and data logging. It has integrated sampling pump with reliable diaphragm technology and supports English, French, German, Spanish and Portuguese languages. DUE TO THE SHELF LIFE OF GAS SENSORS, MOST MULTI GAS MONITORS ARE MADE TO ORDER BY THE MANUFACTURER. PLEASE ALLOW EXTRA TIME FOR DELIVERY OF THIS PRODUCT.