Features Output - Suitable for DC motors up to 70A. SAFE TO USE - Made of high quality delicate metal shell, will not rust. Reliable - High-quality circuit boards ensure consistent and long-lasting performance. Easy: Easily control voltage and speed with adjustable knobs. The adjustable voltage range can really achieve smooth adjustment from 12V to 60V. This is a simple and easy to use DC motor speed controller with mini size, stylish appearance and stable performance. It is made with a high quality circuit board that ensures longer service life. The input voltage can be from 12V DC to 60V and the output voltage is 0-100% of the input voltage. This speed controller is quite convenient to use. Features: Output - Suitable for DC motors up to 70A. SAFE TO USE: Made with a high-quality delicate metal shell, will not rust. Reliable - High quality circuit boards ensure consistent and long-lasting performance. Easy: Easily control voltage and speed with adjustable knobs. Adjustable voltage range can really achieve smooth adjustment from 12V to 60V. Specifications: Model No.: PWM 70A-220S Color: Silver Material: Metal Input voltage: DC 12-60V Output current: 0-70A Power: 4000W Rated current: 70A Speed adjustment type: current adjustment Adjustable Speed Range: 0-100% Speed adjustment mode: potentiometer (linear) Output Voltage: Linear Under Load Over current protection: 80A Red wire: "+" Black Cable: "-" Panel cutting diameter: 10mm/0.4 inch Size: approx. 150*85*45mm/5.9*3.3*1.8inch Weight approximately. 580g/20.7oz Package List: 1 x Speed Controller Package List