The programmable control panel can be connected to the computer for programming, to default the functions of every button. It can be connected by USB or RS232, working with the gf-pr8 software.

Several pieces programmable control panels can be also looped to be a system, for control more devices. It is looped by the inter RS232 setting. 

After connect the programmable control panels as above, and then we should set the ID of each programmable control panel by gf-pr8. The ID number is from 01 to 99, and it also is the class of the programmable control panel in the loop, different programmable control panels should set to different ID. After connections finish, we can set the control modes by GF-PR8