The GT3A-2EAF20 is an 11-pin multi-mode analog timer designed for flexible timing control in industrial automation and control systems. It features 4 selectable operation modes (ON-delay 1, Interval 1, Cycle 1, and Cycle 3) with a time range of 0.1 seconds to 180 hours, and provides both delayed SPDT and instantaneous SPDT contact outputs. The timer operates on 100 to 240V AC (50/60 Hz) or 12V DC power supply, with contact ratings of 250V AC at 3A or 30V DC at 1A for resistive loads. It includes external start, reset, and gate inputs, panel or socket mounting options, and power/output status indicating LEDs for operational visibility. The device delivers ±0.2% timing accuracy with ±10 msec repeatability across voltage and temperature variations, making it suitable for process control, machinery sequencing, and automation applications requiring precise, multi-function timing.