Irrigation Controller and System

A system of irrigation controllers, comprising:

• multiple irrigation controllers;
• wherein each controller regulates at least one water control valve corresponding to a designated watering zone and said each controller comprises:
• a housing;
• a microcontroller housed within said housing and programmed with a microcontroller program;
• wherein said microcontroller is electrically connected to said at least one water control valve;
• a data input system configured to allow input data to be input into said microcontroller program;
• wherein said input data comprises at least one of the following:
• evapotranspiration data, any mandatory watering restriction regulation data, initial start times and initial run times from an existing controller, property-specific data, central command instructions, and a software-tailored watering schedule;
• wherein said microcontroller electrically opens and closes said at least one water control valve based on a customized watering budget/schedule for said designated watering zone;
• wherein said customized watering budget/schedule has been calculated for said designated watering zone for water distribution over a specified time period using an initial minute-based representation of a total water volume to create an adjusted minute-based representation of a total water volume and by allocating said adjusted minute-based representation of a total water volume into a particular number of watering days per said specified time period for said designated watering zone, into a particular number of watering events per each of said watering days for said designated watering zone, and into a particular number of minutes per said watering event for said designated watering zone;
• a data output system comprising a data output transmitter outputting controller-specific data;
• and
• at least one memory storage medium;
• and
• a central command unit performing the steps of:
• (1.) receiving said controller-specific data;
• (2.) receiving operational data;
• (3.) outputting said central command instructions to said data input system.