Sentinel Series Integrated Humidifier for Models D025, DP25, DS025, and SP25Description Integrated wine cellar humidifiers add moisture to the air at the wine cellar conditioning unit instead of directly in the wine cellar. These humidification systems mount directly to either side of our self contained ducted cooling systems or ductable split cooling units and add moisture directly into the airstream, with suggested humidity control up to a maximum of 60% RH. For 60Hz. To achieve relative humidity above 60% RH, we recommend