Cli-Mate’s Fan Controller is a simple, temperature‑driven plug‑in controller from the AC series for standard AC fan motors. It automates intake or extraction by switching between two steps: a user‑set minimum speed and a higher speed that engages when the set temperature is exceeded. Operation is straightforward with two rotary knobs (temperature and minimum speed). An external air‑temperature probe is included with a 5‑meter cable for flexible sensor placement. The unit is rated to 4 A and runs on single‑phase 220–240 V, 50 Hz. Typical operating range is 10–40 °C. A mounting bracket on the housing simplifies installation. Designed for compact grow rooms where reliable, no‑frills ventilation control is required.