Happyskymall 5Pcs DC3V-35V 5A PWM Speed Controller Dimmer DC 3V 6V 12V 24V 35V Variable Voltage Regulator DIY LED Panel Light LED Strip Light 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 : 5 x PWM Speed Dimmer Controller