Yes, these two modules can be set up like a wire. I got a Mayfly to send information over the Pro S3B module to another module connected to a computer. I set them up on the XCTU in transparent mode, set the network IDs to be the same, and told the sender XBee what the serial address is of the receiver XBee. In transparent mode, anytime data is printed to the UART it is automatically sent out of the radio, which is all I really need for the time being. My main question is how to bridge the gap between 900 MHz radio modules and the modular sensors library.