CTL2/CTL3 controllers & collaborators are typically mounted onto a solar panel and come in various generations each marked by specific features and firmware versions.
Rectangular metal control box, batteries integrated into the box. Mounted directly to the back of the solar panel.
Plastic CNC made control box with metal faceplate, mounted to back of the solar panel, distinguishable by green (controller) and red (collaborator) stickers.
Plastic CNC made control box with metal faceplate, Similar to GEN2, but with light blue (controller) and yellow (collaborator) stickers.
Square fiberglass control box; features large QR codes for easy support access and the blue QR on the 9controller) and yellow on the (collaborator). Gen4 is distinguishable by its removable electronics tray.
