Feature:1. Adjustable 5-24V DC Power Supply Motor Speed Controller.2. Security, good performance, high reliability, Good anti-jamming performance.3. Has good insulation performance, low operating temperature, long service life.4. Made of high quality environmentally friendly materials, strong and durable.5. Manual/stepless speed regulation, equipped with a large knob to adjust the voltage fast and conveniently.6. Multi-function regulating voltage switch is generally applicable to LED light, water pump, electric drill, small fan, hairdressing instrument, small motor, security equipment, small household appliances, mobile hard disk, power communication, etc.Specification:Condition: 100% Brand NewItem Type: DC Speed Control SwitchMaterial: ABSColor: As shown in the pictureSize: Approx.5.5x3.5x2cm / 2.2x1.4x0.8inWeight: Approx.55g/1.9ozModulation Mode: Pulse width modulation (PWM) type.Package List:1 x DC Speed Control SwitchNote:1. Please allow 1-2cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.