A plurality of receptacles in an irrigation controller removably receive a plurality of modules. At least one station module is configured for insertion into a first one of the receptacles and is connectable to a corresponding solenoid actuated valve through a dedicated field valve line and common return...http://www.google.com.au/patents/US7248945?utm_source=gb-gplus-sharePatent US7248945 - Remote programming and diagnostic of decoder irrigation system
