RAM Air Pro II 14A Twin Fan Speed Controller

Hold Your Room Temperature Without Running Fans Flat Out

The RAM AIR-PRO is an intelligent, silent indoor climate controller that drives two inline or exhaust fans thermostatically, holding the temperature and air pressure you set rather than blasting at 100% all day. The High Power version delivers 7 Amps per socket output. You get variable temperature control, variable fan speed control and a digital display, plus a 2m remote thermostat sensor for canopy height and a 2m power lead.

Key Benefits

• Controls two fans from one unit, so extraction and intake work together
• 7 Amps per socket output on the High Power model, with headroom for larger fans
• Thermostatic control ramps fans to hold your target temperature
• Variable minimum speed keeps air moving instead of cycling fans fully on and off
• 2m remote sensor measures at the canopy, not at the wall behind the controller
• Silent in operation, and fans run quieter for being run slower

Temperature Swings and Fans Screaming All Day

A fan wired straight to the mains has one setting: everything. Lights come on, the room overshoots, and by night it is too cold and too dry. Left on full it strips humidity and wastes electricity. Running fans off a thermostat holds temperature and humidity in a narrow band and keeps steady airflow across the canopy, avoiding the swings behind stretchy growth and stalled nutrient uptake.

How to Use

• Mount the controller out of the airflow path, where you can read the display
• Place the 2m sensor at canopy height, away from lamps and out of a fan's direct blast
• Plug extraction into one socket and intake or a second fan into the other, each within 7 A
• Set your target temperature, then a minimum speed high enough to keep air moving overnight
• Check across a full cycle, lights-on peak and lights-off low, then leave it alone