Hi, 
  
I'm piecing together a simple CCTV system. 
  
My power supply will be 12vDC but can anyone help me know where I would wire it into the connections in the photo? If I'm not mistaken the markings are for AC 
  
Camera specs are 12-28V ~2w, Flexidome II 3mm LTC 1422/20 
  
Thanks!