ITEM NAME:10A PWM Voltage Regulator Controllers Speed DC Motor Speed Controller DC 9V G1Q9 10A PWM Voltage Regulator Controllers Speed DC Motor Speed Controller DC 9V G1Q9 This high-power regulator is 100% brand new and high quality. With features such as stability and durability, it is an optimal choice for you. The simple wiring makes it user-friendly, no soldering. shelled size: Approx. 80 x 61 x 28 mm (L x W x H) Specifications: Operating Voltage: DC 9 V 55 V (wide input voltage), 0 A Static current: 0.02 A (standby) PWM duty cycle: 0% -100% (IMPORTANT) PWM frequency: 3 kHz product structure: 1 x stage switch, 4 x terminal (2 x power supply, 2 x engine), 1 x LED light function parameters: a.) If there is over-voltage or short circuit when using the backup. b.) Passage is burned off in a matter of seconds to ensure your electrical appliance and SCR safety. Electrical leakage on, the fuse burns down in a matter of seconds to ensure the personal and electrical appliance safety. package content: 1 x voltage regulator Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm..PWM duty cycle: 0% -100% (IMPORTANT). PWM frequency: 3 kHz. Static current: 0.02 A (standby).