If you want to control any load rated more than 5V/40mA with Arduino, you can easily use this motor controller. You can control any load rated upto 60V/30A with this module.
Though the name of this module is 'Motor speed controller', you can control any resistive load you wish such as light. With the pin named 'SIG' you can give PWM signal to control the intensity of light or speed of motor.
For details, please see the manual in the documents section.
Warranty and Replacement:
1 Year Service Warranty (That means if any product made by Techshopbd gets damaged by the customer, the customer has to pay only for the damaged component(s) of the product to repair. The component(s) must be available at our website.)