1. The precision built automatic electronic humidity control system is designed for long-term storage applications. 2. SIRUI designed high performance dehumidifying system controls humidity levels, is highly efficient, energy-saving and non-polluting. 3. Internal placement of the humidity control elements protects the components from damage. 4. Constructed of 6 mm high-strength, cold-rolled steel. Precision welded for structural integrity and long life. 5. Maintains relative humidity up to 24 hours after power is shut off. 6. An electronic password keyboard means no need for a traditional key. Password entry is prompted by display and confirmation tone. 7. The password can be up to 12 digits in length. Secure Password Memory storage: no need to be reset if power is lost. 8. Advanced notification of low voltage. 9. Loud Alarm Warning signal (>90dB).