Motor Speed Controller PWM Motor Control Switch for Fan Feature:1. Intelligent Control: Through PWM control, the motor speed controller can adjust the input voltage to DC 1.8V, 3V, 5V, 6V, and 12V.2. Better Design: This ultra-low voltage DC drive regulator also has a potentiometer with function switch and a power-on indicator.3. Higher safety: The resettable fuse will automatically disconnect under high current, which it will recover after cooling.4. Practical Application: Allows for wide use on fans, aquarium oxygen pumps and other equipment, very stable and practical.5. Easy to Install: Equipped with compact size and light weight, the installation is very convenient to complete. Specification:Item Type: Motor Speed ControllerMaterial: PCBCompable Power Input Voltage: 1.8V 3V 5V 6V 12V Speed Switch: 1803BKM Maximum Output Power: 30W Maximum Continuous Output Current: 2A List Packing:2 x Motor Speed Controller2 x Speed Control Knob2 x Washer2 x NutNote:1. Connect this DC controller to a DC power source. Do not directly connect To household 220V AC power supply, otherwise it will be damaged;2. The power supply should not be greater than 12V;3. It is a maximum current regulator of 2A, it can not drive more than 0.5A continuous current, 775 motor or baby car motor. 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.