1. Input voltage: DC 9-55V (9V 12V 24V 36V 48V 55V Non Pole Electronic Variable Speed Mode) 2. Output voltage: Load linear 3. Output current: 0-40A 4. Continuous power: 2000W 5. Speed regulating type: Current adjust 6. Mode of speed regulation: potentiometer (linear) 7. Speed range: 0 - 100% 8. Control frequency: 25KHz 9. Type of wiring: palisade terminal 10. Knob specification: 100K (148) 11. Module size: (L x W x H) 83 x 56 x 28mm 12. The main board is according to the size: (L x W) 72 x 48mm 13. The potentiometer is installed by the opening: 7mm 14. Package included: - 1 x DC motor pump speed regulator