3PCS 12V~40V 10A PWM DC Motor Speed Control Switch Controller Voltage Regulator Dimmer with Knob-High Efficiency, Low Heat Generating，High Current Protection for Arduino industrial Multi-Port USB charger hub to

Multi-Port USB charger hub to charge up to 7 of your devices simultaneously at full speed

Temperature Range: -22 C degree to 80 C degree ( -9 °F to 175 °F ) Smooth surface and inner wall

1 Pack 6ft/1

0 port charges iPhone 8 and later models from 0% to 50% in 30 mins

generally in the power transmission

3PCS 12V~40V 10A PWM DC Motor Speed Control Switch Controller Voltage Regulator Dimmer with Knob-High Efficiency, Low Heat Generating，High Current Protection for Arduino industrial Multi-Port USB charger hub to3PCS 12V~40V 10A PWM DC Motor Speed Control Switch Controller Voltage Regulator Dimmer with Knob High Efficiency, Low Heat GeneratingHigh Current Protection for Arduino Specification: Input supply voltage: DC 12V 40VThe maximum output power: 400WThe maximum continuous output current : 8AThe overload and short circuit protecting current is 10AStatic Current: 0. 02 A ( Standby )PWM frequency: 13kHzDuty Cycle adjustable: 10% 100%The operation environment