How to use a XBEE modem in an intrinisically safe product?

We are developing an Intrinsically Safe wireless device and are using the XBEE-PRO 900HB module. How can we protect the module so it can pass the I.S. approval?

Have you tried looking into Digi’s KB for Intrinsic Safety? I think you will be surprised with what you find.

http://www.digi.com/support/kbase/kbaseresultdetl?id=2055

http://www.digi.com/support/kbase/kbaseresultdetl?id=2128