None-blind zone operating air conditioner for cavity use is a new high-end model developed by Guangdong Shenling Environmental Systems Co., Ltd. for the special environment of cavity. This machine, specially designed for the air conditioning system of underground engineering, is highly efficient and energy-saving, which can meet the practical needs of both dehumidification and constant temperature of underground engineering and complete the high-precision control of the environmental index of underground engineering. As a standard terminal equipment available for the intelligent centralized whole-process control through the system integration platform, the product features reliable performance, simple operation and high degree of automation that are suitable for civil air defense projects, hydropower projects, subway stations, archives and other underground projects to both desiccant and constant temperature. The unit is equipped with an internationally renowned brand compressor and refrigeration accessories, superior in performance, reliable to control, and remarkable in energy-saving effect.