Building Custom Gateway - XBee S1

I have a spare XBee S1 and was wondering if it could be configured to build a custom gateway as a second way to ingest data from our sensors as well as transmit data into the digi network for ingestion by the main MQTT gateway.

Hi,

Our sensors utilize the Digi Mesh compatible 900 HP S3B modules. The X1 modules, if memory serves me correctly, are 802.15.4 protocol 2.4GHZ modules so they would not be compatible.

We are using the 2.4GHz sensors, not the 900MHz, would that make a difference?

Those are still 802.15.4 modules and would not be compatible. You would need a module like these: