The Control Freak 3A Dynamic Frequency Fan Controller delivers the same award-winning frequency-based control technology as the 7A model, in a compact unit suited to smaller fan setups. It changes the frequency rather than clipping the waveform — meaning fans run silently, last longer, and use less energy. With 90 fan speed settings (10–100%) and adjustable bandwidth (hysteresis), you can dial in precise temperature control or opt for a smoother, wider range. Two sockets let you run both an extractor and intake fan from one controller. Key Features Dynamic frequency control — no buzzing, no waveform clipping 90 fan speed settings from 10% to 100% Adjustable bandwidth (hysteresis) for tight or smooth temperature control Two sockets — run extractor and intake fans simultaneously Energy efficient: power use drops proportionally with fan speed Extends fan lifespan by reducing mechanical stress 3A rating — ideal for smaller fan setups Specifications Amp Rating: 3A Fan Speed Settings: 90 (10–100%) Sockets: 2 Control Type: Dynamic Frequency Brand: Control Freak