Typical set up for medium sized businesses -

Have 2 to 80* transmitters in one area.
One data Receiver.
Signal Boosters (Repeaters) to bring in temperature data from transmitters much further away from the receiver.
Logging Utility & SQL Database (PostgreSQL v.8.1) installed on one computer.
Report Generators installed on other computers on the network for remotely viewing temperature data.

* - just a defined limit - system can support hundreds of transmitters on one receiver.