Transparent modules are a wireless wire. The data that is input to the module is used to directly modulate the carrier. There is no wireless protocol built into the module, no buffering or storage of the data. Usually there are no processors of any kind in these modules, just the physical radio. The advantage of these is that the designer has complete control of the over-the-air data. A wireless protocol can be created that is most efficient for the system; scaled for the amount of data sent by the product, the capabilities of the processor in the product, or both. A company can create a protocol that defines a new market. The products are open, so they can be very dynamic.