Manual speed controller for fans and pumps, 6-30 V DC, 2/3/4 wires, 4-pin interface, current ≤6 A

⚙️ General Description: Manual speed controller for DC 6–30V fans and water pumps. Ideal for demanding DIY enthusiasts: compatible with 2, 3, or 4-wire wiring, precise adjustment via dial, and intuitive installation. Perfect for PC cooling, case ventilation, hydraulic circuits, or water recycling systems. 📊 Technical Specifications: Type: Manual speed controller; Input voltage: DC 6V–30V; Total max. current: <6A (for up to 4 devices); Interface: Compact 4-pin connector; Housing material: Robust ABS; Contents: 1 x Speed controller 🔧 Installation: Ultra-fast installation—no tools or soldering required. Simply connect the fan or pump cables to the corresponding 4-pin terminals. Natively compatible with 2-wire (power), 3-wire (with tachometer), and 4-wire (PWM) standards. Ready to use in under 2 minutes. 🔄 Operation: Adjust the speed by turning the dial: clockwise = increase, counterclockwise = decrease. Smooth, jerk-free control for optimal acoustic comfort and thermal or hydraulic management perfectly suited to your needs. Immediate gains in silence, efficiency, and control. ℹ️ Other information: Designed for continuous and reliable use in a variety of environments. No batteries required—completely passive and self-contained operation. Suitable for industrial fans, circulation pumps, DIY air conditioning or aquaponics systems. A must-have for any demanding workshop or electronics project.