Happyskymall Marswell Ultra-compact High-Speed PWM LED Dimmer 3V - 35V 5A 90w Switching Frequency: 10K for DIY LED Panel Light LED Strip Light (1Pc) mini dc motor speed controller. PWM LED Dimmer for DIY LED Panel Light LED Strip Light Mini DC 3-35V 5A PWM Motor Speed Controller. Wide voltage DC motor speed controller, PWM duty cycle: 1% -100%. By screwing the potentiometer, you can turn off power supply output. High voltage and high current resettable fuse, overcurrent automatic disconnection, power off for cooling for a few seconds fuses automatic recovery. Default disconnection of short circuit point. Please note: the operating voltage can be switched to 3-15v by bridging the connectors marked '3-15v' on the PCB. Package included : 1 x PWM Speed Dimmer Controller