Being around this industry for a long time, most everyone will not be able to provide you with a solution to your question. When you are looking to deploy a new wireless system in any building, a wireless site survey is suggested. The engineer whom has experience and have done this many times in the past and has all the equipment can determine what access points you need, what external antennas you may need, possible enclosures and the main thing, ap placement. What is in the warehouse, the layout of product, supplies and equipment, where wireless is required, how high up wireless will be used, what equipment will be connected, etc are all questions that need to be answered. Keep in mind, once you buy, have cables pulled, it’s too late to make changes. You will not be able to fix any guesses.
As far as what ap, all AP’s have a temperature rating in the data sheet, look there. If an ap you want to use doesn’t support the temperature you need, then you have to look at an enclosure from another manufacturer like Tessco.
Again, there is no way anyone here can provide information that can make your install successful. You either just need to hire someone to help or performs site survey and provide suggestions, or you go with the 3802’s and use your experience from how your other warehouses have been done and get feedback where the complain the most and figure out where to place access point which will also help you with density.
-Scott
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