I can't read any markings on the PTCs but it is possible they have used devices rated for 24V. Still, it is a pity because it was a design intention to move away from PTC fuses.
Apart from that, I guess those boards would work on 12V, and it is not hard to replace the PTCs with the intended fuse holders. It would certainly be more cost effective for me to buy their boards and rework them rather than building them myself.
Apart from that, I guess those boards would work on 12V, and it is not hard to replace the PTCs with the intended fuse holders. It would certainly be more cost effective for me to buy their boards and rework them rather than building them myself.