SMSCOM Twin Controller 4.5A Mk2 is a professional dual fan speed controller designed to automatically manage intake and extraction fans in hydroponic grow rooms. With advanced climate control technology, it ensures stable temperature and negative pressure by adjusting both fans simultaneously and proportionally—eliminating the need for manual settings. The Mk2 version features plug-and-play functionality with a built-in NTC temperature probe, allowing you to set your desired temperature and let the controller do the rest. Ideal for mid-sized grow setups, this unit operates fans up to a combined 4.5 amps and keeps your environment stable for healthier plants and stronger yields. Key Features: Controls intake and exhaust fans simultaneously Maintains negative pressure for odour control Automatically adjusts fan speed based on temperature Built-in temperature probe for real-time climate monitoring Ideal for hydroponic systems, tents, and sealed rooms Quiet operation with smooth fan speed transitions Suitable for fans with combined load up to 4.5A Plug-and-play — no wiring required
