Mobile leakage monitoring system is a system for early warning of leakage to dispatch the information of time and place of leakage by SMS to the manager’s mobile when such has occurred. There are so many places requiring to keep temperature/moisture constant by a thermo-hygrostat and airconditioner. When there happens leakage in computer room as a company’s brain or telecommunication room or electricity/machine room, and nobody monitors and tries to solve the emergency problem, then the situation may develops into a critical situation such as the paralysis of everything, causing the need of replacement. If there is anybody who recognizes the problem and reacts to it swiftly, that harmful situation could be avoided enough. But, nevertheless, if it is still very difficult to decide investing a environment management system costed at several tens of thousands dollars or letting somebody stay there for 24 hours a day, then, it’s time to seriously review our mobile leakage monitoring system. If you have such an existing monitoring system installed, it will be less costly and easy for you to have our system run along with it.