Description: This programmer is used to program the solar controllers and LED drivers made by our company. Features one: Through the programmer, the parameters can be set or read on your computer. Feature two: The programmer also can use offline. First you save the needed parameters in the programmer on your computer. Because all the products that we manufactures adopts wireless infrared communication technology, next you just need to point the programmer to the controller or driver and press a button on the programmer, and then the parameters' setting will be transmitted to the products. This is because all the products we manufactures adopts wireless infrared communication technology. This make it very easy and convenient to set thousands of controllers. Feature three: during the maintenance at site, using the programmer as a bridge between the controller and the computer, without disconnecting the cables, you can read the controller's working parameters on your computer, such as voltage, current, the times of under voltage, and charging/discharging and so on. It is easy to know the working state of the controller.