Using this Ultima X3 Series gas monitor is straightforward. Just place it in the area where you want to detect gas. Remember, this item is used and untested, so it's a good idea to get it checked before full - scale use. As for maintenance, keep it clean and dry. If you notice any significant damage or abnormal behavior, it's best to consult a professional. Also, since it's only available for local pickup at the MSU Surplus Store, make sure to plan your visit according to their hours and location.