Wired Connection
The telemetry industry has standardized on a number of different protocols to use in these types of applications. Most protocols were based upon the assumption that the cabling between the monitoring station and the RTU/PLC is an RS-232 or RS-422 serial link.  The protocols commonly used on these serial links are MODBUS-RTU, MODBUS-ASCII, DF1, [...]

Following is a list of Raveon’s data radio modems features that make them an ideal choice for SCADA and wireless telemetry.
High-speed over the air data rates. 19200bps in 25kHz channel, 9600bps in 12.5kHz.
Remote status monitoring including DC voltage, packet error statistics, modem “up time”, and receiver signal strength. 
Easy to use. Plug-in, Turn-on, and GO.  Transmit data [...]