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DALLAS, (BUSINESS WIRE) -- RF Monolithics, Inc. has further enhanced its M2M portfolio of wireless communications products today with the release of a firmware upgrade for its DNT series of 900 MHz and 2.4 GHz proprietary FHSS (frequency hopping spread spectrum) RF modules.

The DNT series modules are notable for delivering great performance at a remarkably low-price. In addition to exceptional price/performance, the DNT series modules are also extraordinary for their high degree of configurability that include a selection of configurable over-the-air data rates and transmit power levels which allow one module to work for many products.

With the Version 2.0 firmware upgrade featuring new software-configurable Tree Routing with fail-over, designing and maintaining FHSS WSN (wireless sensor networking) applications has been made considerably easier. Also, the size of FHSS WSN networks can now be extended to a virtually unlimited number of nodes.

"The firmware upgrade not only extends range through an intuitive tree routing scheme, but also addresses a weakness of many tree routing systems, single points of failure, by adding a fail-over capability. The DNT series tree routing gives OEMs the path redundancy of a true mesh network without the complexity and increased latency seen in mesh networks," said Tim Cutler, Director of M2M products.

By employing Tree Routing, any node can be a routing node through software configuration and a virtually unlimited number of nodes can join the network. Any node that loses its parent can automatically find and join a new parent plus routing nodes can also perform the same data gathering as end nodes eliminating the need for dedicated routing nodes. Software configurable "heartbeats" keep the master DNT informed of the presence of nodes, even when they are sleeping or otherwise not transmitting.

Networks can be configured "on the fly" to turn nodes into routing nodes through over-the-air configuration commands allowing network coverage to be extended as needed after the network is commissioned.

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