Features Higher Accuracy: Wide speed adjustment range ensures stable working performance with high efficiency. Standard Design: Supports 220V AC input and 90V DC output, enabling direct start up with DC voltage. Reversible Uses: Easily change the rotation direction of your DC motor by adjusting wiring between M+ and M？ terminals. Wide Application: Perfectly suits 50W, 100W, 120W, 200W, 300W, 400W, and more, providing flexible usage. Easy Installation: Compact and lightweight design allows for quick and convenient installation within minutes. Features: 1、Higher Accuracy: Wide in speed adjustment range, the DC motor speed controller ensures the stable working performance with high efficiency. 2、Standard Design: Supports 220V AC input and 90V DC output, the motor speed regulator enables direct start up when there is DC voltage. 3、Reversible Uses: To reverse the CW and CCW rotation direction of your DC motor, you can changing the wiring between M+ and M？ terminals. 4、Wide in Fitting: Suits perfectly for 50W, 100W, 120W, 200W, 300W, 400W and so on, the motor speed control switch has flexible application. 5、Easy to Install: Compact in size and light in weight as well, the DC motor speed controller is very convenient to install within minutes. Specification: Item Type: DC Motor Speed Controller Input: 220V AC Output: 90V DC Overall Dimension: Approx. 100 x 60 x 114mm / 3.94 x 2.36 x 4.49in Opening Size: Approx. 81 x 5m / 3.19 x 2.09in Installation Method: Panel Screw Installation Package List: 1 x DC Motor Speed Controller Package List 1 x DC Motor Speed Controller