An industrial intercom is built to withstand the rigors of a harsher environment. Its not only harsh from a physical abuse standpoint, but if you choose a wireless industrial intercom, you may also have to face potential interference from equipment in use of its wireless signal.
There’s a good article called How To Choose Commercial Intercom Systems that explains industrial/commercial intercoms in more detail.
Go to the Commercial Intercoms section of www.IntercomsOnline.com for more industrial intercom products.