... control precision, for details, please visit the technical support. 2. It can maitain the humidity from 25%RH to 90%RH that you set ... , chemical raw materials, precise instruments, optical measuring devices, electric and electronic parts, components and semi-products, and etc.Below 30% Reagent ... components, perfurme, and etc. TWAIPO AP-48EX Energy saving & automatic Low Humidity ESD Dry Cabinet