Features 【Accurate Control and Reliable Working】Accurate control enables stable working performance with great reliability, very useful. The layout on the PCB is reasonable and concise. 【Sturdy Shell and Good quality】Sturdy ABS shell can provide secure protection for the internal circuit board. 【Reliable Working and Easy to install】The layout on the PCB is reasonable and concise, thus has excellent anti interference.Comes with a compact size and a light weight, the installation is very convenient. 【Using anti-etch material】Using anti-etch Technology, it will get a long time using and will not worry about oxidation. 【Providing quality proving and after-sale services】We will be responsible for all the products we sell and provide after-sale services. Spec: Item Type: Motor Speed Controller Material: ABS + PCB Function: DC motor speed control PWM controller. Colour: Black Applicable Power Supply: DC 10-40 V Rated Current: 40 A (maximum output current). Frequency: 15000Hz Control Motor Power: 12 V: 480W (maximum), 24 V: 960W (maximum) 36 V: 1440W (maximum), 40 V: 1600W (maximum) Analog Signal: 0-5V / 0-20mA PackageList: 1 x Motor Speed Controller Notice: Do not use it outside the voltage and current range. Package List 1 x Motor Speed Controller