Ren24
There are at least 4 different 24 channel renard board designs, they are:
Renard SS24
The Renard SS24 is a 24 channel AC controller with integrated ACSSRs and is frequently available for purchase thru group buys on the site. The Renard Standardized Series (SS) controllers are part of a design effort to standardize the board layouts for Renard based systems and to establish a standardized list of components to use in Renard designs.
Renard 24HC
The Ren24HC is a 24 Channel AC controller with integrated ACSSrs and is available for purchase offsite.
Renard 24LV
The Renard 24LV is a 24 channel DC controller. Is also available for purchase offsite.
Ren24DC
The Ren24DC is a high current 24 channel DC controller with integrated DCSSRs supporting 4 Amps per channel and 60 Amps total. It is available for purchase from DIYLEDExpress.