DC 10-55V 100A Motor Speed Controller Reversible PWM Forward/Reverse Control Q81COOTDTY100% Brand New and High QualityFeatures: Z Forward, Reverse Bi-directional Two-Position Switch. The motor speed controller allows you to control the motor speed and direction of rotation. Speed Type: Flow Control Input Voltage: DC10-55VMoc (Max): 5500W Continuous Current: 60A Maximum Current: 100A Adjustment Range: 0-100% Frequency: 15KHzmDimensions: 13x10x 4cm/5.12x3.94x1.57inch Color: Silver Quantity: 1 PcNote: 1. Please allow 0-1cm error due to manual measurement. Pls make sure you do not mind before bidding.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included:1 x Motor Speed Controller (Without Retail Package)