When choosing gas detectors, many factors come into play. The type of facility in which they will be placed, the gases they are designed to detect, environmental conditions, and more all play a role in determining the accuracy and reliability of the detectors. Due to the numerous factors involved, it is important to think carefully about the pros and cons associated with the gas detection system you are considering. To help with this, here is some additional information to help with your decision. http://www.statessensor.com/