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 Package List 1 x Motor Speed Controller Do not use it outside the voltage and current range. 1Motor Controller: Specially designed for DC 1040V motors, the PWM speed regulator ensures high efficiency. 2Accurate Control: Accurate control enables stable working performance with great reliability, very useful. 3Reliable Working: The layout on the PCB is reasonable and concise, thus has excellent anti interference. 4Sturdy ABS Shell: Sturdy ABS shell can provide secure protection for the internal circuit board, durable. 5Easy to Install: Comes with a compact size and a light weight, the installation is very convenient.