E‑Mode’s pH Controller Wi‑Fi is a dosing controller that measures and corrects the pH of nutrient solutions. It monitors pH via an included pH electrode and actuates two integrated peristaltic pumps (pH− and pH+) to raise or lower acidity automatically. The controller supports remote monitoring and configuration over 2.4 GHz Wi‑Fi with a cloud service for data logging and email alerts. Operating range is pH 3.0–12.0, with recommended protected operation at pH 5.0–8.0; dosing pauses are adjustable from 0.5 to 48 hours, and manual doses of 1–50 mL are available. Typical reservoir size is 20–2000 L. Hardware features include a color resistive touch TFT, IP64 enclosure, 220–240 V input, 10 W power draw, approximate 100 × 200 × 150 mm size, and 1.8 kg weight.