These radio modules are largely exempt ... repeater which can greatly extend the range of his low-power system. [Peter] is calling this a “long lines relay” after old AT&T microwave technology ...

The model WRR-22 is a long range radio-type receiver featuring a Transmitter receive range set to 100-feet (30.5m) and 2 weigand outputs. The WRR-22 also offers encrypted reception for best in class ...