AGC expandable field controller is an irrigation management system that operates automatically or in combination with Surveyor control software. Packs a 120VA transformer with 14-solenoid capacity and automatic circuit protection, including lightning protection components. Operates on 120 or 230 v., 50 or 60 Hz. Displays individual diagnostic station LEDs (green for active, red for faults). Walks operator through programs, records, manual operations, and diagnostics. Programmed mode features automatic programs plus 4 custom manual programs, all providing sequencing of simultaneous station groups (SSGs). Standalone mode is self-sufficient. Snap-in communication modules provide 2-way radio and/or hard-wire capability. Non-volatile, 100-yr. memory retains data and time/ date settings during power outages.