Ageon’s K116 Big Display is a temperature controller designed for refrigerated display cases and similar applications that require defrost management. It integrates control of cooling, fan and lighting through four relay outputs, and adds a built‑in voltage monitor to protect equipment from mains fluctuations. The front module uses a large, easy‑to‑read display with touch keys. A digital input accepts an open‑door sensor, enabling alarms and energy‑saving actions. The controller supports up to four presets (“recipes”) including an Eco mode for reduced consumption during low‑use periods. The system uses NTC temperature probes and is powered by a wide‑range 85–264 Vac supply. Typical installation splits the unit into a display module and a power module sized for panel mounting.