The Controller 1 is designed to provide temperature trigger functionality to USB fans and devices, including AC Infinity AIRPLATE Series cabinet fans and MULTIFAN Series component fans. The unit measures 3.2 by 1.4 by 0.5 inches. It features an aluminum back-plate which can be surface mounted onto wall panels and cabinets. Includes a 6-foot precision thermal probe that is water resistant. Complete kit includes thermal trigger unit, thermal probe, mounting screws, and instruction manual.The controller features four pre-set temperature triggers as well as an ON and OFF mode. The four temperature triggers are 84F, 88F, 92F, and 96F. Also includes a 4F buffer to prevent fans from turning on and off too quickly due to small fluctuations in temperature.