Metal shell with handle, big wheels with R410a refrigerant.
·Optional compressor.
·3 minutes delay for protecting the compressor.
·Color is optional.
·inside active carbon filter mesh.
·power failure protection.
·Auto re-start if power failure
·24 hours a day working is available.
·4 casters for easy moving.
·micro computer control and high quality humidity sensor for accurate humity probing.
·Low noise .
https://www.china-hvactech.com/dehumidifier/home-dehumidifier/basement-dehumidifier.html