Disclosed herein are low data rate electronic devices capable of wireless communication at ranges of thousands of meters. These devices may be such things as keypads, door latches, occupancy monitors, sprinkler controllers and other devices controlled or monitored in a campus or a collection of buildings. These devices operate at intermediate ranges in RF congested areas and failure-intolerant situations through the use of discrete programmable channels. Devices may measure the quality of a communications link on a channel, and apply varying levels of redundancy based upon a recent history of success and failure of packet transmission to other distant devices, which measurement may be a value of badness increased as errors are encountered and decreased as packet communication is successful.