• Providing a communication solution between water wells which were less than 3 km apart.
• A secure and reliable communication link.
• Not affected by high temperature and humidity.
• Achieving high throughput to handle high data rates.
• Supporting Modbus to offer backward compatibility with SCADA.

After a number of detailed site surveys, Xceltra decided to provide Giza Systems with the M2M remote Wireless solution to be installed for Saudi national water company (NWC). This decision was made based on the following factors:

• Using the wired solutions wasn’t an option, as it suffers from humidity and affected by water.
• Since the distance between the sites didn’t require huge transmission power, 2.4GHZ modems were picked over low frequency modems.

The designed solution consisted of wireless radios, as it met the project requirement through the following features:

• License free reducing the operation cost.
• Offered flexibility with Ethernet and serial ports
• Support several encryption protocols for secure communication
• Range up to 10 Km @ 400 mW, which fits perfectly in the project as the distances between the wells was < 3km
• Deterministic AP to AP mesh network repeatability allowing the increase of the range , multiple channel options and increasing network scalability.
• Fits the use in outdoor environment with a wide Range of operating temperature from –40 to +60 °C and the ability to operate reliably in humidity from 0 to 99 % RH
• The ability to support Modbus communication protocol which eliminates the need of extra hardware to communicate with the SCADA.
• Over-the-air network diagnostics and configuration to simplify accesses to this huge network.