Their product is solid in its design both as an effective control of %RH and simplicity compared to tradition steam or sprinklers controlled systems. They have a TRUE series that is very reliable but when you need a custom chamber or room for your environmental controlled needs, look no further for your choice. Reliable tech support, owned and operated by the most genuine and knowledgeable crew, I see Darwin Chambers continuing to evolve as they refine and innovate environmental technologies and other related fields.